# CalcBright Calculators (remote · calcbright.com)

160+ calculators: take-home pay for 166 countries, mortgage, loan, VAT, BMI, dates, units, currency.

- Trust score: 64/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-18

## Components

- remote · `calcbright.com`: 64/100 (this document), [markdown](https://verifymcp.io/servers/com-calcbright-calcbright/calcbright.md), [page](https://verifymcp.io/servers/com-calcbright-calcbright/calcbright)

## Channel facts

- Endpoint: `https://calcbright.com/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.1.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-10-18.

- **Endpoint Security**: 63/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not fully verified: no authorisation is required to call this server, and 4 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 63/100
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 22822 tokens (~136/item across 167 items; 167 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 20/100
  - Stability observed for 6 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Tool Safety**: 75/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - 0 of 4 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation; "land_transfer_tax_calculator" implies "transfer" and declares readOnlyHint instead, contradicting what its own name says it does.
  - An AI judge read all 168 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 60/100
  - Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28.

## Install

### How do I install the CalcBright Calculators MCP server?

CalcBright Calculators is a hosted endpoint at https://calcbright.com/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http com-calcbright-calcbright 'https://calcbright.com/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "com-calcbright-calcbright": {
      "url": "https://calcbright.com/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "com-calcbright-calcbright": {
      "type": "http",
      "url": "https://calcbright.com/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.com-calcbright-calcbright]
url = "https://calcbright.com/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "com-calcbright-calcbright": {
      "type": "remote",
      "url": "https://calcbright.com/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add com-calcbright-calcbright --url 'https://calcbright.com/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  com-calcbright-calcbright:
    url: "https://calcbright.com/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "com-calcbright-calcbright": {
      "Transport": "http",
      "Url": "https://calcbright.com/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add com-calcbright-calcbright -t streamable-http -u 'https://calcbright.com/mcp'
```

### Other

```json
{
  "mcpServers": {
    "com-calcbright-calcbright": {
      "type": "http",
      "url": "https://calcbright.com/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-10-17 (score 64, +1)

- [cosmetic] “body_surface_area_calculator” added an optional parameter “heightIn”
- [cosmetic] “body_surface_area_calculator” added an optional parameter “weightLb”
- [cosmetic] “take_home_pay_calculator” added an optional parameter “bahrain”
- [cosmetic] “401k_calculator” dropped the optional parameter “currency”

### 2026-10-16 (score 63, 0)

- [security] The server rewrote its instructions, which are the text every model session reads
- [functional] New tool “body_surface_area_calculator”
- [functional] New tool “interest_only_mortgage_calculator”
- [functional] New tool “permutation_combination_calculator”
- [functional] New tool “unit_price_calculator”
- [functional] New tool “weighted_average_calculator”

### 2026-10-15 (score 63, +1)

No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-13 (score 62, +1)

- [functional improvement] Stability: unverified → 0.03

### 2026-10-12 (score 61)

First indexed and scored.

## MCP tools (167)

### `mortgage_calculator` (~183 tokens)

Mortgage Calculator

A $320,000 loan at 6.5% over 30 years is about $2,023 a month before escrow. Add property tax, insurance, PMI and HOA, and see the full amortization schedule. Web page: https://calcbright.com/mortgage-calculator

Input parameters:

- `currency` (string): Currency
- `down` (number): Down payment (%)
- `extra` (number): Extra payment / month Extra principal paid every month.
- `hoa` (number): HOA fees / month
- `insurance` (number): Home insurance / year
- `pmi` (number): PMI rate (if down < 20%) (%)
- `price` (number): Home price
- `rate` (number): Interest rate (%)
- `tax` (number): Property tax / year
- `years` (number): Loan term (years)

### `loan_calculator` (~131 tokens)

Loan & EMI Calculator

Borrow 25,000 at 7.5% for 5 years and the EMI is about 501 a month. Get the installment, total interest and a month-by-month schedule for any fixed-rate loan. Web page: https://calcbright.com/loan-calculator

Input parameters:

- `amount` (number): Loan amount
- `currency` (string): Currency
- `extra` (number): Extra payment / month Optional prepayment added to every installment.
- `months` (number): + months
- `rate` (number): Interest rate (% per year)
- `years` (number): Term (years)

### `compound_interest_calculator` (~120 tokens)

Compound Interest Calculator

$10,000 at 7% compounded monthly grows to about $40,387 in 20 years. Add monthly contributions and compare daily, monthly or yearly compounding, year by year. Web page: https://calcbright.com/compound-interest-calculator

Input parameters:

- `compounding` (string): Compounding
- `currency` (string): Currency
- `initial` (number): Initial deposit
- `monthly` (number): Monthly contribution
- `rate` (number): Annual interest rate (%)
- `years` (number): Years (years)

### `salary_calculator` (~140 tokens)

Salary Converter

$25 an hour is $52,000 a year at 40 hours a week. Convert pay between hourly, daily, weekly, bi-weekly, monthly and annual, with an optional after-tax estimate. Web page: https://calcbright.com/salary-calculator

Input parameters:

- `amount` (number): Pay amount
- `currency` (string): Currency
- `days` (number): Days per week
- `hours` (number): Hours per week
- `period` (string): Per
- `tax` (number): Estimated tax rate (%) Optional: your approximate total tax & deduction rate.
- `weeks` (number): Paid weeks per year

### `percentage_calculator` (~89 tokens)

Percentage Calculator

What is 15% of 200? What percent is 30 of 200? Solve percent-of, percentage change, increase and decrease questions, with the working shown for each step. Web page: https://calcbright.com/percentage-calculator

Input parameters:

- `a` (number): Percent (X)
- `b` (number): Of number (Y)
- `mode` (string): Calculation

### `age_calculator` (~92 tokens)

Age Calculator

Your exact age in years, months and days from your date of birth, plus total weeks and days, the weekday you were born and how long until your next birthday. Web page: https://calcbright.com/age-calculator

Input parameters:

- `asOf` (string): Age on date Leave empty to use today's date. (YYYY-MM-DD)
- `birth` (string): Date of birth (YYYY-MM-DD)

### `bmi_calculator` (~153 tokens)

BMI & Calorie Calculator

70 kg at 1.75 m is a BMI of 22.9. Check your Body Mass Index in kg/cm or lb/ft, the healthy weight range for your height, your BMR and daily calorie needs. Web page: https://calcbright.com/bmi-calculator

Input parameters:

- `activity` (string): Activity level
- `age` (number): Age (years)
- `cm` (number): Height (cm)
- `ft` (number): Height (ft)
- `inch` (number): (in)
- `kg` (number): Weight (kg)
- `lb` (number): Weight (lb)
- `sex` (string): Sex
- `units` (string): Units

### `unit_converter` (~82 tokens)

Unit Converter

Convert cm to inches, kg to lbs, °C to °F and more in 18 categories, from length and weight to torque, flow rate and density, using exact conversion factors. Web page: https://calcbright.com/unit-converter

Input parameters:

- `from` (string): From
- `to` (string): To
- `value` (number): Value

### `currency_converter` (~81 tokens)

Currency Converter

Convert USD, EUR, GBP, INR, PKR, AED and 30+ other currencies at mid-market rates refreshed several times a day, with quick tables for common amounts. Web page: https://calcbright.com/currency-converter

Input parameters:

- `amount` (number): Amount
- `from` (string): From
- `to` (string): To

### `time_zone_converter` (~104 tokens)

Time Zone Converter

9:00 AM in New York is 2:00 PM in London in summer. Convert any date and time between two cities with daylight saving applied for that date, plus a world clock. Web page: https://calcbright.com/time-zone-converter

Input parameters:

- `from` (string): From
- `to` (string): To
- `when` (string): Date & time Leave empty to use the current time. (YYYY-MM-DDTHH:MM)

### `401k_calculator` (~176 tokens)

401(k) Calculator

A 401k calculator with the 2026 $24,500 limit and catch-ups built in: project your balance at retirement from your match, raises and returns, year by year. Web page: https://calcbright.com/401k-calculator

Input parameters:

- `age` (number): Current age (years)
- `balance` (number): Current 401(k) balance
- `contribution` (number): Your contribution (% of pay)
- `match` (number): Employer match (%) e.g. 50% of what you contribute…
- `matchLimit` (number): …up to (% of pay)
- `raise` (number): Annual salary increase (%)
- `rate` (number): Expected annual return (%)
- `retireAge` (number): Retirement age (years)
- `salary` (number): Annual salary

### `amortization_calculator` (~130 tokens)

Amortization Calculator

This amortization calculator splits every payment into principal and interest, shows your payoff date and what extra payments save, and exports to CSV. Web page: https://calcbright.com/amortization-calculator

Input parameters:

- `amount` (number): Loan amount
- `currency` (string): Currency
- `extra` (number): Extra payment / month Added to principal every month from the first payment.
- `rate` (number): Interest rate (%)
- `start` (string): First payment date (YYYY-MM-DD)
- `term` (number): Loan term
- `unit` (string): Term in

### `annuity_calculator` (~162 tokens)

Annuity Calculator

An annuity calculator for fixed-term income: what a lump sum pays monthly over 10–30 years, or the pot needed for a target payment, level or rising yearly. Web page: https://calcbright.com/annuity-calculator

Input parameters:

- `amount` (number): Lump sum (starting balance)
- `currency` (string): Currency
- `frequency` (string): Payments
- `growth` (number): Payment increase each year (%) E.g. 2–3% to keep pace with inflation.
- `mode` (string): I want to find
- `rate` (number): Annual interest rate (%) Compounded at the payment frequency.
- `timing` (string): Paid at
- `years` (number): Payout period (years)

### `apr_calculator` (~120 tokens)

APR Calculator

A 7% loan with a $1,000 fee really costs 9.17%. This APR calculator folds origination fees and points into the true rate, payment and full cost of borrowing. Web page: https://calcbright.com/apr-calculator

Input parameters:

- `amount` (number): Loan amount
- `currency` (string): Currency
- `fees` (number): Upfront fees Origination, processing, points and other finance charges.
- `rate` (number): Interest rate (%)
- `term` (number): Loan term (months)

### `area_calculator` (~93 tokens)

Area Calculator

Area of a rectangle, square, triangle, circle, trapezoid, parallelogram or ellipse from your measurements, with the formula and the working shown. Web page: https://calcbright.com/area-calculator

Input parameters:

- `shape` (string): Shape
- `unit` (string): Unit
- `x` (number): Length
- `y` (number): Width
- `z` (number)

### `auto_loan_calculator` (~138 tokens)

Auto Loan Calculator

An auto loan calculator that counts sales tax, down payment and trade-in the way most US states do, then shows the car payment, interest and full schedule. Web page: https://calcbright.com/auto-loan-calculator

Input parameters:

- `currency` (string): Currency
- `down` (number): Down payment
- `price` (number): Vehicle price
- `rate` (number): Interest rate (APR) (%)
- `tax` (number): Sales tax (%) Charged on the price minus the trade-in.
- `term` (number): Loan term (months)
- `tradeIn` (number): Trade-in value

### `average_calculator` (~77 tokens)

Average Calculator

Paste a list of numbers to get the mean, median, mode, range, sum and count at once – with the working for each, so you can see why mean and median differ. Web page: https://calcbright.com/average-calculator

Input parameters:

- `numbers` (string): Numbers Separate values with commas, spaces or new lines.

### `bmr_calculator` (~162 tokens)

BMR Calculator

Your basal metabolic rate from Mifflin–St Jeor, revised Harris–Benedict and Katch–McArdle side by side, plus daily calorie needs at five activity levels. Web page: https://calcbright.com/bmr-calculator

Input parameters:

- `age` (number): Age (years)
- `bodyFat` (number): Body fat (optional, for Katch–McArdle) (%)
- `cm` (number): Height (cm)
- `ft` (number): Height (ft)
- `inch` (number): (in)
- `kg` (number): Weight (kg)
- `lb` (number): Weight (lb)
- `sex` (string): Sex
- `units` (string): Units

### `body_fat_calculator` (~246 tokens)

Body Fat Calculator

Body fat % from a tape measure with the US Navy (Hodgdon–Beckett) formula: enter neck, waist and hips to get your ACE category, fat mass and lean mass. Web page: https://calcbright.com/body-fat-calculator

Input parameters:

- `cm` (number): Height (cm)
- `ft` (number): Height (ft)
- `hipCm` (number): Hips (widest point) (cm)
- `hipIn` (number): Hips (widest point) (in)
- `inch` (number): (in)
- `kg` (number): Weight (kg)
- `lb` (number): Weight (lb)
- `neckCm` (number): Neck (below the larynx) (cm)
- `neckIn` (number): Neck (below the larynx) (in)
- `sex` (string): Sex
- `units` (string): Units
- `waistCm` (number): Waist (men: at navel · women: narrowest) (cm)
- `waistIn` (number): Waist (men: at navel · women: narrowest) (in)

### `body_surface_area_calculator` (~122 tokens)

Body Surface Area Calculator

A person 170 cm tall weighing 70 kg has a body surface area of 1.82 m² by the Mosteller formula. See Du Bois and Haycock results next to it, in metric or imperial. Web page: https://calcbright.com/body-surface-area-calculator

Input parameters:

- `height` (number): Height (cm)
- `heightIn` (number): Height (inches)
- `units` (string): Units
- `weight` (number): Weight (kg)
- `weightLb` (number): Weight (pounds)

### `break_even_calculator` (~107 tokens)

Break-Even Calculator

How many units must you sell before you make a profit? Enter fixed costs, price and variable cost to get break-even units, revenue and contribution margin. Web page: https://calcbright.com/break-even-calculator

Input parameters:

- `currency` (string): Currency
- `fixed` (number): Fixed costs (per period) Rent, salaries, insurance…
- `price` (number): Price per unit
- `variable` (number): Variable cost per unit Materials, packaging, commission…

### `btu_calculator` (~180 tokens)

BTU Calculator

Size an air conditioner or heater in BTU/h, tons and kW from room area, ceiling height, sun and occupants – with a Gulf climate setting for the UAE and Saudi. Web page: https://calcbright.com/btu-calculator

Input parameters:

- `ceilFt` (number): Ceiling height (ft)
- `ceilM` (number): Ceiling height (m)
- `climate` (string): Climate
- `kitchen` (string): Is it a kitchen?
- `mode` (string): Sizing for
- `occupants` (number): People usually in the room
- `sqft` (number): Room area (sq ft) Length × width of the room.
- `sqm` (number): Room area (m²) Length × width of the room.
- `sun` (string): Sun exposure
- `units` (string): Units

### `budget_calculator` (~114 tokens)

Budget Calculator

Budget your take-home pay with the 50/30/20 rule – needs, wants and savings in monthly amounts – or set your own split, such as 60/20/20 for high-rent cities. Web page: https://calcbright.com/budget-calculator

Input parameters:

- `currency` (string): Currency
- `income` (number): Monthly take-home income After tax and deductions
- `needsPct` (number): Needs (%)
- `wantsPct` (number): Wants (%) Savings get whatever is left

### `business_days_calculator` (~116 tokens)

Business Days Calculator

Count Monday–Friday working days between two dates (January 2026 has 22), or add business days to a start date to find a shipping or contract deadline. Web page: https://calcbright.com/business-days-calculator

Input parameters:

- `days` (number): Business days to add Use a negative number to go back in time.
- `end` (string): End date (YYYY-MM-DD)
- `mode` (string): What do you want to do?
- `start` (string): Start date (YYYY-MM-DD)

### `cagr_calculator` (~104 tokens)

CAGR Calculator

A CAGR calculator for the steady yearly rate between two values: $10,000 to $20,000 in 5 years is 14.87% a year. Use it for investments, revenue or users. Web page: https://calcbright.com/cagr-calculator

Input parameters:

- `begin` (number): Beginning value
- `currency` (string): Currency
- `end` (number): Ending value
- `years` (number): Number of years (years)

### `calorie_deficit_calculator` (~189 tokens)

Calorie Deficit Calculator

Your maintenance calories, a daily target for losing 0.25–1 kg (0.5–2 lb) a week and the weeks to your goal weight – never set below safe minimum intakes. Web page: https://calcbright.com/calorie-deficit-calculator

Input parameters:

- `activity` (string): Activity level
- `age` (number): Age (years)
- `cm` (number): Height (cm)
- `ft` (number): Height (ft)
- `goalKg` (number): Goal weight (kg)
- `goalLb` (number): Goal weight (lb)
- `inch` (number): (in)
- `kg` (number): Weight (kg)
- `lb` (number): Weight (lb)
- `rate` (string): Weight loss per week (kg)
- `sex` (string): Sex
- `units` (string): Units

### `calories_burned_calculator` (~106 tokens)

Calories Burned Calculator

Calories burned walking, running, cycling, swimming, lifting and 20+ more activities, from Compendium MET values, your body weight and the time spent. Web page: https://calcbright.com/calories-burned-calculator

Input parameters:

- `activity` (string): Activity
- `kg` (number): Weight (kg)
- `lb` (number): Weight (lb)
- `minutes` (number): Duration (min)
- `units` (string): Units

### `canadian_mortgage_calculator` (~182 tokens)

Canadian Mortgage Calculator

Canadian mortgage payments with semi-annual compounding, CMHC premiums, the minimum down payment and accelerated bi-weekly or weekly options. Web page: https://calcbright.com/canadian-mortgage-calculator

Input parameters:

- `buyer` (string): First-time buyer or new build? Insured mortgages can be amortized over 30 years only for first-time buyers or newly built homes.
- `down` (number): Down payment (%) Minimum 5% of the first $500,000 and 10% of the rest; 20% from $1.5M.
- `freq` (string): Payment frequency
- `price` (number): Home price
- `rate` (number): Interest rate (fixed) (%) Compounded semi-annually, as Canadian law requires for fixed rates.
- `years` (string): Amortization

### `capital_gains_tax_calculator` (~146 tokens)

Capital Gains Tax Calculator

2026 US federal tax on a stock, crypto or property sale: long-term 0%, 15% or 20% versus short-term ordinary rates, plus the 3.8% NIIT where it applies. Web page: https://calcbright.com/capital-gains-tax-calculator

Input parameters:

- `filing` (string): Filing status
- `holding` (string): Holding period
- `income` (number): Other annual income Wages and other ordinary income for the year, before the standard deduction.
- `purchase` (number): Purchase price (cost basis) Include buying commissions and improvements.
- `sale` (number): Sale price After selling costs.

### `car_lease_calculator` (~195 tokens)

Car Lease Calculator

Car lease payment from price, MSRP, residual, money factor or APR, term and sales tax – split into depreciation, finance charge and tax to check a dealer quote. Web page: https://calcbright.com/car-lease-calculator

Input parameters:

- `apr` (number): APR (%)
- `currency` (string): Currency
- `down` (number): Down payment & trade-in Capitalised cost reduction
- `mf` (number): Money factor APR ≈ money factor × 2,400
- `msrp` (number): MSRP (sticker price)
- `price` (number): Negotiated price Gross capitalised cost
- `rateType` (string): Interest given as
- `residualPct` (number): Residual value (% of MSRP)
- `tax` (number): Sales tax (%) Applied to the monthly payment, as in most US states
- `term` (number): Lease term (months)

### `case_converter` (~77 tokens)

Case Converter

Switch text to UPPER, lower, Title or Sentence case, or to camelCase, snake_case and kebab-case for code. It all runs in your browser; nothing is uploaded. Web page: https://calcbright.com/case-converter

Input parameters:

- `mode` (string): Convert to
- `text` (string): Your text

### `cd_calculator` (~115 tokens)

CD Calculator

A CD calculator for interest earned by maturity, with APY to APR conversion for any compounding – the same maths for Canadian GICs, UK bonds and GCC deposits. Web page: https://calcbright.com/cd-calculator

Input parameters:

- `compounding` (string): Compounding
- `currency` (string): Currency
- `deposit` (number): Deposit amount
- `rate` (number): Interest rate (%)
- `rateType` (string): Rate quoted as
- `term` (number): Term (months)

### `circle_calculator` (~84 tokens)

Circle Calculator

Know a circle’s radius, diameter, circumference or area? Enter any one to get the other three, with the formulas, the working and answers in terms of π. Web page: https://calcbright.com/circle-calculator

Input parameters:

- `known` (string): I know the
- `unit` (string): Unit
- `value` (number): Radius (r)

### `color_converter` (~92 tokens)

Color Converter

Convert any color between HEX, RGB, HSL, HSV and CMYK, preview the swatch, check WCAG 2 contrast on white and black, and get a palette of tints and shades. Web page: https://calcbright.com/color-converter

Input parameters:

- `color` (string): Colour Paste HEX, RGB, HSL, HSV, CMYK or a basic colour name such as “teal”.

### `commission_calculator` (~99 tokens)

Commission Calculator

Sales commission from the sale amount and rate, plus base salary for total pay – and a table comparing earnings at other rates. Works tier by tier too. Web page: https://calcbright.com/commission-calculator

Input parameters:

- `base` (number): Base salary (optional) For the same period as the sales
- `currency` (string): Currency
- `rate` (number): Commission rate (%)
- `sales` (number): Sale amount

### `concrete_calculator` (~161 tokens)

Concrete Calculator

Concrete for slabs, wall footings and post holes in cubic yards and cubic meters, plus how many 40, 60 or 80 lb or 25 kg premix bags to buy for the job. Web page: https://calcbright.com/concrete-calculator

Input parameters:

- `depth` (number): Thickness (in)
- `diameter` (number): Diameter (in)
- `height` (number): Height / depth (ft)
- `length` (number): Length (ft)
- `qty` (number): Quantity
- `shape` (string): Shape
- `unit` (string): Units
- `waste` (number): Extra for waste / spillage (%) Many contractors add 5–10%.
- `width` (number): Width (ft)

### `confidence_interval_calculator` (~129 tokens)

Confidence Interval Calculator

Confidence intervals for a mean (t or z) or a proportion (Wald and Wilson) at 80–99.9% confidence – margin of error, critical value and every step shown. Web page: https://calcbright.com/confidence-interval-calculator

Input parameters:

- `conf` (string): Confidence level
- `mean` (number): Sample mean (x̄)
- `n` (number): Sample size (n)
- `sd` (number): Sample SD (s)
- `type` (string): Interval for
- `x` (number): Successes (x)

### `cooking_converter` (~91 tokens)

Cooking Converter

Cups, tablespoons and teaspoons to grams or ounces by each ingredient’s density – a cup of flour is 125 g, a cup of sugar 200 g. US cups, with charts. Web page: https://calcbright.com/cooking-converter

Input parameters:

- `amount` (number): Amount
- `from` (string): From
- `ingredient` (string): Ingredient
- `to` (string): To

### `countdown_calculator` (~111 tokens)

Countdown Calculator

How many days until Christmas, New Year or your own date? See the days, weeks, months and hours left – or the days since a date that has already passed. Web page: https://calcbright.com/countdown-calculator

Input parameters:

- `from` (string): Count from Leave empty to count from today. (YYYY-MM-DD)
- `label` (string): Event name (optional)
- `preset` (string): Count down to
- `target` (string): Target date (YYYY-MM-DD)

### `credit_card_payoff_calculator` (~134 tokens)

Credit Card Payoff

Credit card payoff calculator: $5,000 at 22% APR, paying $200 a month, takes 34 months and $1,749.90 of interest. See your date, or the payment you need. Web page: https://calcbright.com/credit-card-payoff-calculator

Input parameters:

- `apr` (number): Interest rate (APR) (%)
- `balance` (number): Card balance
- `currency` (string): Currency
- `mode` (string): I want to
- `months` (number): Pay off in (months)
- `payment` (number): Monthly payment

### `date_calculator` (~116 tokens)

Date Calculator

Add or subtract days, weeks, months or years from any date to get the exact date and weekday – like 90 days from today. Leap years and month ends handled. Web page: https://calcbright.com/date-calculator

Input parameters:

- `days` (number): Days
- `months` (number): Months
- `op` (string): Operation
- `start` (string): Start date Leave empty to start from today. (YYYY-MM-DD)
- `weeks` (number): Weeks
- `years` (number): Years

### `date_difference_calculator` (~100 tokens)

Date Difference Calculator

Days between two dates, also shown in weeks, months and years, with weekday and weekend counts. Choose whether to include the end date for event lengths. Web page: https://calcbright.com/date-difference-calculator

Input parameters:

- `end` (string): End date Leave empty to use today's date. (YYYY-MM-DD)
- `includeEnd` (string): Include the end date?
- `start` (string): Start date (YYYY-MM-DD)

### `day_of_week_calculator` (~82 tokens)

Day of the Week Calculator

What day of the week was it? Get the weekday for any date from 1000 to 9999 – birthdays, historic events, future plans – with Zeller’s working shown. Web page: https://calcbright.com/day-of-week-calculator

Input parameters:

- `date` (string): Date Leave empty to use today's date. (YYYY-MM-DD)

### `debt_payoff_calculator` (~131 tokens)

Debt Payoff Calculator

A debt payoff calculator that runs the snowball and avalanche across all your debts: debt-free date, total interest and the order each balance is cleared. Web page: https://calcbright.com/debt-payoff-calculator

Input parameters:

- `budget` (number): Total monthly budget for debts Everything you can pay each month, including the minimums.
- `currency` (string): Currency
- `debts` (string): Your debts – one per line: name, balance, APR, minimum payment Example: Car loan, 12000, 6.5, 280 – write amounts without thousands separators.

### `debt_to_income_calculator` (~148 tokens)

Debt-to-Income Calculator

A debt to income ratio calculator that adds your monthly debts, finds your DTI and 28% housing ratio, and checks them against the 36% and 43% lender limits. Web page: https://calcbright.com/debt-to-income-calculator

Input parameters:

- `auto` (number): Car loan payments
- `cards` (number): Credit card minimums
- `currency` (string): Currency
- `housing` (number): Rent or mortgage payment
- `income` (number): Gross monthly income Before tax and deductions.
- `other` (number): Other debt payments Personal loans, child support, alimony, etc.
- `student` (number): Student loan payments

### `depreciation_calculator` (~141 tokens)

Depreciation Calculator

Depreciation calculator: yearly schedules and book value for straight-line, double-declining balance, sum-of-the-years’ digits and units of production. Web page: https://calcbright.com/depreciation-calculator

Input parameters:

- `cost` (number): Asset cost
- `currency` (string): Currency
- `life` (number): Useful life (years)
- `method` (string): Method
- `salvage` (number): Salvage (residual) value
- `totalUnits` (number): Total lifetime units Machine hours, miles, items produced…
- `units` (string): Units used each year One number per year, separated by commas.

### `discount_calculator` (~113 tokens)

Discount Calculator

Sale price and savings for any percent off, plus the true total when discounts stack: 25% off and then an extra 10% off is 32.5% in total, not 35%. Web page: https://calcbright.com/discount-calculator

Input parameters:

- `currency` (string): Currency
- `discount` (number): Discount (% off)
- `extra` (number): Extra discount (optional) (% off) Applied to the already-reduced price
- `price` (number): Original price

### `dividend_yield_calculator` (~115 tokens)

Dividend Yield Calculator

A $50 stock paying $0.50 a quarter yields 4%. Get the dividend yield for monthly, quarterly or annual payers, plus the cash income your shares produce. Web page: https://calcbright.com/dividend-yield-calculator

Input parameters:

- `currency` (string): Currency
- `dividend` (number): Dividend per share, per payment
- `frequency` (string): Paid
- `price` (number): Share price
- `shares` (number): Number of shares (optional) (shares)

### `dld_fee_calculator` (~175 tokens)

DLD Fee Calculator

Budget 6–7% on top of a Dubai property price. Itemises the 4% DLD fee, title deed, trustee office, mortgage registration and 2% agent commission plus VAT. Web page: https://calcbright.com/dld-fee-calculator

Input parameters:

- `agentPct` (number): Agent commission (%) Usually 2% of the price, plus 5% VAT.
- `loan` (number): Mortgage amount
- `noc` (number): Developer NOC fee (if you pay it) Developers charge about AED 500–5,000 + VAT for the No Objection Certificate; the seller normally pays it.
- `price` (number): Property price
- `purchase` (string): Buying with
- `split` (string): Who pays the 4% DLD fee?

### `down_payment_calculator` (~96 tokens)

Down Payment Calculator

Down payment, loan amount and LTV for any home price, with 3%, 5%, 10% and 20% down side by side – and a flag for when PMI applies below 20% equity. Web page: https://calcbright.com/down-payment-calculator

Input parameters:

- `currency` (string): Currency
- `downPct` (number): Down payment (%)
- `price` (number): Home price

### `dubai_mortgage_calculator` (~195 tokens)

Dubai Mortgage Calculator

Expats need 20% down on a first Dubai home under AED 5M. This Dubai mortgage calculator applies the CBUAE LTV caps, then adds DLD, agent and bank fees. Web page: https://calcbright.com/dubai-mortgage-calculator

Input parameters:

- `agentPct` (number): Agent commission (%) Plus 5% VAT.
- `arrangePct` (number): Bank arrangement fee (% of loan) Usually up to 1% of the loan; 5% VAT is added.
- `buyer` (string): Buyer
- `downPct` (number): Down payment (%)
- `home` (string): Property
- `price` (number): Property price
- `rate` (number): Interest rate (%)
- `valuation` (number): Valuation fee
- `years` (number): Loan term (years) Maximum 25 years (UAE Central Bank).

### `egypt_end_of_service_calculator` (~211 tokens)

Egypt End of Service Calculator

Egypt’s 2025 Labour Law: at least 2 months’ wage per year for an unjustified dismissal, plus 3 months’ notice pay. See what your employer and NOSI owe you. Web page: https://calcbright.com/egypt-end-of-service-calculator

Input parameters:

- `end` (string): End date Leave empty to use today's date. (YYYY-MM-DD)
- `insured` (number): Monthly insurable wage (optional) The wage your social insurance is paid on. Leave empty to use your wage within the 2026 limits (EGP 2,700–16,700).
- `notice` (number): Notice given by the employer (months) Months of written notice you received (the law requires 3 months).
- `reason` (string): How did the job end?
- `start` (string): Start date (YYYY-MM-DD)
- `wage` (number): Last monthly wage Full monthly wage – basic pay plus regular allowances and fixed bonuses.

### `egypt_social_insurance_calculator` (~113 tokens)

Egypt Social Insurance Calculator

Egyptian employees pay 11% social insurance and employers 18.75%, on an insurable wage between EGP 2,700 and EGP 16,700 in 2026. Split by branch. Web page: https://calcbright.com/egypt-social-insurance-calculator

Input parameters:

- `wage` (number): Monthly insurable wage The wage you are registered on with social insurance. 2026 limits: EGP 2,700 minimum, EGP 16,700 maximum.

### `electricity_cost_calculator` (~150 tokens)

Electricity Cost Calculator

A 100 W TV on 5 hours a day costs about $2.55 a month at 17¢/kWh. Turn any appliance’s watts and hours of use into kWh and running cost by day, month and year. Web page: https://calcbright.com/electricity-cost-calculator

Input parameters:

- `currency` (string): Currency
- `days` (number): Days used per month (days)
- `hours` (number): Hours used per day (h)
- `preset` (string): Appliance
- `price` (number): Electricity price (per kWh)
- `watts` (number): Power rating (W) Check the label on the appliance or its charger.

### `exponent_calculator` (~114 tokens)

Exponent Calculator

Exponent calculator for 8^(2/3), 2⁻³ or 2^100: handles negative, decimal and fractional powers and nth roots, with exact big integers and the rule used. Web page: https://calcbright.com/exponent-calculator

Input parameters:

- `base` (number): Base
- `exp` (string): Exponent Whole numbers, decimals, negatives and fractions like 2/3 all work.
- `mode` (string): Calculate
- `n` (number): Root (n)

### `fd_calculator` (~110 tokens)

FD Calculator

FD calculator using the quarterly compounding Indian banks apply to cumulative deposits: ₹1 lakh at 7% for 5 years grows to ₹1,41,477.82 at maturity. Web page: https://calcbright.com/fd-calculator

Input parameters:

- `compounding` (string): Interest compounded
- `currency` (string): Currency
- `principal` (number): Deposit amount
- `rate` (number): Interest rate (% p.a.)
- `years` (number): Tenure (years)

### `fha_loan_calculator` (~207 tokens)

FHA Loan Calculator

FHA payments at 3.5% down include a 1.75% upfront MIP plus 0.50–0.55% a year. See the full monthly cost with tax and insurance beside a conventional loan. Web page: https://calcbright.com/fha-loan-calculator

Input parameters:

- `convRate` (number): Conventional interest rate (%)
- `credit` (string): Credit score
- `down` (number): Down payment (%)
- `hoa` (number): HOA fees (/ month)
- `insurance` (number): Homeowners insurance (/ year)
- `pmiRate` (number): Conventional PMI rate (% / year) Typically 0.3%–1.5% depending on credit score; drops off at 78% loan-to-value.
- `price` (number): Home price
- `rate` (number): FHA interest rate (%)
- `tax` (number): Property tax (/ year)
- `term` (string): Loan term

### `flooring_calculator` (~158 tokens)

Flooring Calculator

A 12 × 12 ft room with 10% waste needs 8 boxes of 20 sq ft. Turn room size into boxes of laminate, vinyl plank, tile or hardwood to buy, and the material cost. Web page: https://calcbright.com/flooring-calculator

Input parameters:

- `box` (number): Coverage per box (sq ft)
- `currency` (string): Currency
- `length` (number): Room length (ft)
- `price` (number): Price per sq ft (optional)
- `unit` (string): Units
- `waste` (number): Waste allowance (%) 10% for straight lay, 15% for diagonal or herringbone.
- `width` (number): Room width (ft)

### `fraction_calculator` (~99 tokens)

Fraction Calculator

Type 1/2 + 3/4 or 2 3/8 ÷ 1 1/4 and get the answer in lowest terms, as a mixed number and as a decimal, with the common-denominator steps written out. Web page: https://calcbright.com/fraction-calculator

Input parameters:

- `a` (string): First fraction
- `b` (string): Second fraction
- `op` (string): Operation

### `fuel_cost_calculator` (~161 tokens)

Fuel Cost Calculator

250 miles at 30 mpg and $3.50 a gallon is $29.17 in gas. Price any one-way or round trip in mpg, L/100 km or km/L, and split the cost between passengers. Web page: https://calcbright.com/fuel-cost-calculator

Input parameters:

- `currency` (string): Currency
- `distUnit` (string): Distance unit
- `distance` (number): Trip distance (one way)
- `econUnit` (string): Economy unit
- `economy` (number): Fuel economy
- `people` (number): Split cost between (people)
- `price` (number): Fuel price
- `priceUnit` (string): Price per
- `roundTrip` (string): Round trip?

### `fuel_economy_converter` (~98 tokens)

Fuel Economy Converter

Convert mpg to L/100km, km/L or UK mpg in one step: 30 mpg (US) is 7.84 L/100 km and 36.03 imperial mpg. Includes a reference chart for 4–12 L/100 km. Web page: https://calcbright.com/fuel-economy-converter

Input parameters:

- `from` (string): Unit
- `value` (number): Fuel economy

### `future_value_calculator` (~152 tokens)

Future Value Calculator

How much will $10,000 plus $200 a month be worth in 10 years? This future value calculator answers that – or solves backwards for the present value of a target. Web page: https://calcbright.com/future-value-calculator

Input parameters:

- `amount` (number): Present value (starting amount)
- `compounding` (string): Compounding
- `contribution` (number): Periodic contribution
- `currency` (string): Currency
- `frequency` (string): Contribution frequency
- `mode` (string): Solve for
- `rate` (number): Annual interest rate (%)
- `timing` (string): Contributions made at
- `years` (number): Number of years (years)

### `gcc_gratuity_calculator` (~154 tokens)

GCC Gratuity Calculator

Qatar pays 3 weeks a year, Kuwait cuts it if you resign early, Bahrain and Oman changed rules in 2023–24. End-of-service gratuity for expats in all four. Web page: https://calcbright.com/gcc-gratuity-calculator

Input parameters:

- `country` (string): Country of employment
- `end` (string): Last working day Leave empty to use today's date. (YYYY-MM-DD)
- `reason` (string): How did employment end?
- `start` (string): Joining date (YYYY-MM-DD)
- `wage` (number): Last basic monthly salary Qatar, Bahrain and Oman: basic wage only. Kuwait: the last remuneration (basic plus regular allowances).

### `gosi_calculator` (~148 tokens)

GOSI Calculator

Saudis on the old system pay 9.75% GOSI and employers 11.75%; expats pay nothing. Covers the rising 2024-law pension rate and the SAR 45,000 wage cap. Web page: https://calcbright.com/gosi-calculator

Input parameters:

- `basic` (number): Monthly basic salary
- `housing` (number): Monthly housing allowance Cash housing allowance – GOSI wage = basic + housing.
- `nationality` (string): Employee
- `phase` (string): Contribution period Under the new law the pension rate rises by 0.5% each July until 2028.
- `system` (string): First registered with GOSI

### `gpa_calculator` (~252 tokens)

GPA Calculator

Letter grades A to F with plus and minus, weighted by credit hours, for up to 8 courses. Get this term’s GPA on the 4.0 scale and your new cumulative GPA. Web page: https://calcbright.com/gpa-calculator

Input parameters:

- `c1` (number): Credits
- `c2` (number): Credits
- `c3` (number): Credits
- `c4` (number): Credits
- `c5` (number): Credits
- `c6` (number): Credits
- `c7` (number): Credits
- `c8` (number): Credits
- `credits0` (number): Credits completed
- `g1` (string): Course 1 grade
- `g2` (string): Course 2 grade
- `g3` (string): Course 3 grade
- `g4` (string): Course 4 grade
- `g5` (string): Course 5 grade
- `g6` (string): Course 6 grade
- `g7` (string): Course 7 grade
- `g8` (string): Course 8 grade
- `gpa0` (number): Current GPA

### `grade_calculator` (~105 tokens)

Final Grade Calculator

At 88% with a final worth 25%, you need 96% on the final to finish with an A. Enter your grade, the exam weight and your target to see the score you need. Web page: https://calcbright.com/grade-calculator

Input parameters:

- `current` (number): Current grade (%)
- `target` (number): Grade you want (%)
- `weight` (number): Final exam weight (%) Share of the overall grade the final is worth.

### `gravel_calculator` (~195 tokens)

Gravel Calculator

A 10 × 10 ft bed 3 in deep takes 0.93 cubic yards of gravel – about 1.31 tons. Size gravel, stone, sand, topsoil or mulch orders in yards, m³, tons or bags. Web page: https://calcbright.com/gravel-calculator

Input parameters:

- `currency` (string): Currency
- `depth` (number): Depth (in) 2–3 in (5–8 cm) for paths, 4–6 in (10–15 cm) for driveways.
- `diameter` (number): Diameter (ft)
- `length` (number): Length (ft)
- `material` (string): Material
- `price` (number): Price (optional)
- `priceUnit` (string): Priced
- `shape` (string): Area shape
- `units` (string): Units
- `width` (number): Width (ft)

### `gst_calculator` (~113 tokens)

GST Calculator

Add or remove GST at the slabs in force since September 2025 (5%, 18%, 40%) or legacy 12% and 28%, split as CGST + SGST locally or IGST inter-state. Web page: https://calcbright.com/gst-calculator

Input parameters:

- `amount` (number): Amount excluding GST
- `currency` (string): Currency
- `mode` (string): Calculation
- `rate` (string): GST rate
- `supply` (string): Type of supply

### `heart_rate_zone_calculator` (~125 tokens)

Heart Rate Zone Calculator

Zone 2 for a 30-year-old is 114–133 bpm by 220 − age. Get all five training zones from your age, using 220 − age or Tanaka, or personalise them with resting HR. Web page: https://calcbright.com/heart-rate-zone-calculator

Input parameters:

- `age` (number): Age (years)
- `formula` (string): Max heart rate formula
- `resting` (number): Resting heart rate (optional) (bpm) Add it to use the Karvonen (heart-rate reserve) method.

### `height_converter` (~109 tokens)

Height Converter

Convert cm to feet and inches, or feet and inches to cm, using the exact 2.54 cm inch: 175 cm is 5 ft 8.9 in. Includes a height chart from 150 cm to 200 cm. Web page: https://calcbright.com/height-converter

Input parameters:

- `cm` (number): Height (cm)
- `feet` (number): Feet (ft)
- `inches` (number): Inches (in)
- `mode` (string): Convert

### `heloc_calculator` (~161 tokens)

HELOC Calculator

Your HELOC limit is home value × CLTV minus the mortgage. See that limit, the interest-only draw payment and the jump when the repayment period begins. Web page: https://calcbright.com/heloc-calculator

Input parameters:

- `cltv` (number): Lender's max CLTV (%) Combined loan-to-value limit – most lenders allow 80%–90%.
- `draw` (number): Amount you plan to borrow
- `drawYears` (number): Draw period (years)
- `home` (number): Home value
- `mortgage` (number): Mortgage balance owed
- `rate` (number): HELOC interest rate (%) Usually variable: prime rate + a margin.
- `repayYears` (number): Repayment period (years)

### `hijri_date_converter` (~129 tokens)

Hijri Date Converter

Gregorian to Hijri and back on Saudi Arabia’s official Umm al-Qura calendar – for Iqama, contract and payroll dates – with the next Ramadan and Eid dates. Web page: https://calcbright.com/hijri-date-converter

Input parameters:

- `gdate` (string): Gregorian date Years 1902–2076 (Umm al-Qura calendar). (YYYY-MM-DD)
- `hd` (number): Hijri day
- `hm` (string): Hijri month
- `hy` (number): Hijri year (AH)
- `mode` (string): Convert

### `holiday_entitlement_calculator` (~219 tokens)

Holiday Entitlement Calculator

UK holiday entitlement calculator: statutory 5.6 weeks (max 28 days), pro-rata for part-time days or hours, starters and leavers, and 12.07% irregular hours. Web page: https://calcbright.com/holiday-entitlement-calculator

Input parameters:

- `basis` (string): How do you work?
- `days` (number): Days worked per week (days)
- `end` (string): Leaving date Leave blank if staying. (YYYY-MM-DD)
- `hours` (number): Hours worked per week (hours)
- `period` (string): Employed for
- `start` (string): Start date Leave blank if before the leave year. (YYYY-MM-DD)
- `worked` (number): Hours worked in the pay period (hours) Holiday accrues at 12.07% of hours actually worked (leave years from 1 April 2024).
- `yearStart` (string): Leave year starts Often 1 January or 1 April – check your contract. (YYYY-MM-DD)

### `home_affordability_calculator` (~189 tokens)

Home Affordability

On $100,000 a year the 28/36 rule caps housing at $2,333 a month. This home affordability calculator turns that cap, your debts and down payment into a price. Web page: https://calcbright.com/home-affordability-calculator

Input parameters:

- `currency` (string): Currency
- `debts` (number): Monthly debt payments Car, student, card minimums, etc.
- `down` (number): Down payment
- `dti` (number): Total DTI limit (back-end) (%)
- `front` (number): Housing ratio (front-end) (%)
- `income` (number): Gross annual income
- `insurance` (number): Home insurance / year
- `propertyTax` (number): Property tax (% / yr)
- `rate` (number): Mortgage rate (%)
- `years` (number): Loan term (years)

### `hours_calculator` (~400 tokens)

Hours Calculator

An hours calculator laid out as a weekly time card: start, end and unpaid break per day, totalled as h:mm and decimal hours, with hours over 40 flagged. Web page: https://calcbright.com/hours-calculator

Input parameters:

- `currency` (string): Currency
- `friBreak` (number): Break (min)
- `friEnd` (string): End (HH:MM, 24-hour)
- `friStart` (string): Friday start (HH:MM, 24-hour)
- `monBreak` (number): Break (min)
- `monEnd` (string): End (HH:MM, 24-hour)
- `monStart` (string): Monday start (HH:MM, 24-hour)
- `rate` (number): Hourly rate (optional)
- `satBreak` (number): Break (min)
- `satEnd` (string): End (HH:MM, 24-hour)
- `satStart` (string): Saturday start (HH:MM, 24-hour)
- `sunBreak` (number): Break (min)
- `sunEnd` (string): End (HH:MM, 24-hour)
- `sunStart` (string): Sunday start (HH:MM, 24-hour)
- `thuBreak` (number): Break (min)
- `thuEnd` (string): End (HH:MM, 24-hour)
- `thuStart` (string): Thursday start (HH:MM, 24-hour)
- `tueBreak` (number): Break (min)
- `tueEnd` (string): End (HH:MM, 24-hour)
- `tueStart` (string): Tuesday start (HH:MM, 24-hour)
- `wedBreak` (number): Break (min)
- `wedEnd` (string): End (HH:MM, 24-hour)
- `wedStart` (string): Wednesday start (HH:MM, 24-hour)

### `ideal_weight_calculator` (~110 tokens)

Ideal Weight Calculator

At 175 cm, the Devine formula puts a man’s ideal weight at 70.5 kg. Compare Robinson, Miller, Devine and Hamwi with the healthy BMI range for your height. Web page: https://calcbright.com/ideal-weight-calculator

Input parameters:

- `cm` (number): Height (cm)
- `ft` (number): Height (ft)
- `inch` (number): (in)
- `sex` (string): Sex
- `units` (string): Units

### `income_tax_calculator` (~195 tokens)

Income Tax Calculator

Uses the 2026 IRS brackets and $16,100 standard deduction (Rev. Proc. 2025-32). See federal tax slice by slice, marginal vs effective rate, plus state tax. Web page: https://calcbright.com/income-tax-calculator

Input parameters:

- `deduction` (string): Deduction
- `filing` (string): Filing status
- `income` (number): Gross annual income Wages, self-employment profit, interest and other ordinary income.
- `itemized` (number): Total itemized deductions Mortgage interest, state & local taxes (SALT), charity, medical above 7.5% of AGI.
- `pretax` (number): Pre-tax deductions 401(k), traditional IRA, HSA, etc.
- `state` (string): State
- `stateRate` (number): State effective tax rate (%) Your state has progressive rates – enter your approximate effective rate.

### `inflation_calculator` (~122 tokens)

Inflation Calculator

At 3% a year, $100 of shopping costs $134.39 in a decade. This inflation calculator projects future prices or past values using the latest official CPI rate. Web page: https://calcbright.com/inflation-calculator

Input parameters:

- `amount` (number): Amount
- `currency` (string): Currency
- `direction` (string): Calculate
- `rate` (number): Average inflation rate (% / yr) Leave empty to use the latest official annual inflation for your currency’s country.
- `years` (number): Years ahead (years)

### `interest_only_mortgage_calculator` (~127 tokens)

Interest-Only Mortgage Calculator

A $300,000 loan at 6.5% costs $1,625 a month interest-only, then $2,236.72 once repayment starts. Compare it with a standard mortgage and see the extra interest. Web page: https://calcbright.com/interest-only-mortgage-calculator

Input parameters:

- `currency` (string): Currency
- `ioYears` (number): Interest-only period (years)
- `loan` (number): Loan amount
- `rate` (number): Interest rate (%)
- `term` (number): Total loan term (years)

### `ip_subnet_calculator` (~149 tokens)

IP Subnet Calculator

Paste 192.168.1.10/24 or any IPv4 CIDR to get the network, broadcast, usable host range, subnet and wildcard masks in binary – then split it into equal subnets. Web page: https://calcbright.com/ip-subnet-calculator

Input parameters:

- `cidr` (number): Prefix length (CIDR)
- `ip` (string): IPv4 address You can also type CIDR notation, such as 10.0.0.0/16.
- `split` (number): Split into subnets (optional) Rounded up to a power of two – e.g. 4 subnets of a /24 are four /26 networks.

### `jordan_end_of_service_calculator` (~167 tokens)

Jordan End of Service Calculator

Jordanian workers outside social security earn one month’s wage per year of service (Labour Law Art. 32). Add arbitrary dismissal compensation and notice pay. Web page: https://calcbright.com/jordan-end-of-service-calculator

Input parameters:

- `covered` (string): Were you covered by social security?
- `end` (string): End date Leave empty to use today's date. (YYYY-MM-DD)
- `notice` (string): Did the employer give one month’s written notice?
- `reason` (string): How did the job end?
- `start` (string): Start date (YYYY-MM-DD)
- `wage` (number): Last monthly wage The last wage you were paid. For commission or piece-rate pay, use the average of the last 12 months.

### `jordan_social_security_calculator` (~103 tokens)

Jordan Social Security Calculator

Jordan’s Social Security Corporation takes 7.5% from employees and 14.25% from employers – 21.75% in all – on wages up to JOD 3,733 a month in 2026. Web page: https://calcbright.com/jordan-social-security-calculator

Input parameters:

- `wage` (number): Monthly wage Gross monthly wage subject to social security. Capped at JOD 3,733 in 2026.

### `land_transfer_tax_calculator` (~171 tokens)

Land Transfer Tax Calculator

A $700,000 Ontario home owes $10,475 in land transfer tax – double in Toronto. 2026 rates for every province, BC PTT, Quebec welcome tax and buyer rebates. Web page: https://calcbright.com/land-transfer-tax-calculator

Input parameters:

- `assessed` (number): Assessed value (if higher) Tax is charged on the greater of price and assessed value.
- `firstTime` (string): First-time home buyer?
- `montreal` (string): Property in Montréal?
- `nsRate` (number): Municipal deed transfer tax rate (%) Halifax: 1.5%. Check your municipality’s rate.
- `price` (number): Purchase price
- `region` (string): Province
- `toronto` (string): Property in the City of Toronto?

### `lcm_gcd_calculator` (~100 tokens)

LCM & GCD Calculator

For 12, 18 and 30 the GCD is 6 and the LCM is 180. Get both for up to 20 whole numbers, with each prime factorization shown – GCF and HCF are the same thing. Web page: https://calcbright.com/lcm-gcd-calculator

Input parameters:

- `numbers` (string): Whole numbers 2 to 20 positive whole numbers, separated by commas or spaces.

### `lean_body_mass_calculator` (~132 tokens)

Lean Body Mass Calculator

A 70 kg, 175 cm man has about 56 kg of lean mass by the Boer formula. Enter your height, weight and sex to estimate lean and fat mass in kg or pounds. Web page: https://calcbright.com/lean-body-mass-calculator

Input parameters:

- `cm` (number): Height (cm)
- `ft` (number): Height (ft)
- `inch` (number): (in)
- `kg` (number): Weight (kg)
- `lb` (number): Weight (lb)
- `sex` (string): Sex
- `units` (string): Units

### `loan_to_value_calculator` (~97 tokens)

Loan-to-Value (LTV) Calculator

A $240,000 loan on a $300,000 home is an 80% LTV. Enter your balance and property value to see your ratio, equity and the paydown needed to reach 80%. Web page: https://calcbright.com/loan-to-value-calculator

Input parameters:

- `currency` (string): Currency
- `loan` (number): Loan / mortgage balance
- `value` (number): Property value

### `logarithm_calculator` (~96 tokens)

Logarithm Calculator

Log calculator for common log (base 10), natural log (ln), log base 2 or any custom base like log₃(81) = 4, with the change-of-base division written out. Web page: https://calcbright.com/logarithm-calculator

Input parameters:

- `base` (string): Base
- `custom` (number): Custom base (b)
- `x` (number): Number (x)

### `macro_calculator` (~163 tokens)

Macro Calculator

Protein and carbs have 4 kcal per gram, fat 9. Turn your Mifflin–St Jeor calorie target into daily grams for fat loss, maintenance or gain in three splits. Web page: https://calcbright.com/macro-calculator

Input parameters:

- `activity` (string): Activity level
- `age` (number): Age (years)
- `cm` (number): Height (cm)
- `diet` (string): Diet style
- `ft` (number): Height (ft)
- `goal` (string): Goal
- `inch` (number): (in)
- `kg` (number): Weight (kg)
- `lb` (number): Weight (lb)
- `sex` (string): Sex
- `units` (string): Units

### `markup_calculator` (~92 tokens)

Markup Calculator

A 50% markup on a $40 cost sells at $60 – only a 33.33% margin. Set a markup on cost to see the selling price, profit per unit and the true gross margin. Web page: https://calcbright.com/markup-calculator

Input parameters:

- `cost` (number): Cost
- `currency` (string): Currency
- `markup` (number): Markup (%)

### `morocco_severance_calculator` (~176 tokens)

Morocco Severance Pay Calculator

Moroccan severance pay is 96 hours of wage a year for the first 5 years, rising to 240 hours after 15. Add abusive dismissal damages and notice pay. Web page: https://calcbright.com/morocco-severance-calculator

Input parameters:

- `category` (string): Job category Sets the minimum notice period.
- `end` (string): End date Leave empty to use today's date. (YYYY-MM-DD)
- `notice` (string): Did the employer give the notice period?
- `reason` (string): Type of dismissal
- `start` (string): Start date (YYYY-MM-DD)
- `wage` (number): Average gross monthly wage Average over the last 52 weeks, including bonuses and benefits that are part of your pay (Labour Code Art. 54–55).

### `mortgage_payoff_calculator` (~181 tokens)

Mortgage Payoff Calculator

$200 a month extra on a $250,000, 6.5% loan saves $64,927 and 5½ years. Model extra payments, a lump sum or biweekly in this mortgage payoff calculator. Web page: https://calcbright.com/mortgage-payoff-calculator

Input parameters:

- `balance` (number): Current loan balance
- `biweekly` (string): Biweekly payments
- `currency` (string): Currency
- `extra` (number): Extra payment / month
- `extraMonths` (number): plus months (months)
- `lump` (number): One-time lump sum
- `lumpMonth` (number): Paid with payment #
- `rate` (number): Interest rate (%)
- `start` (string): Next payment date (YYYY-MM-DD)
- `years` (number): Remaining term (years)

### `number_base_converter` (~111 tokens)

Number Base Converter

Decimal 255 is 11111111 in binary, 377 in octal and FF in hex. Convert between any bases from 2 to 36, paste 0x or 0b values, and handle 64-bit+ integers. Web page: https://calcbright.com/number-base-converter

Input parameters:

- `custom` (number): Custom base Used for custom input and shown as an extra result.
- `from` (string): Input base
- `value` (string): Number to convert

### `number_to_words_converter` (~93 tokens)

Number to Words Converter

Writing a check? Get the amount line in words, such as “and 45/100 dollars”, or spell out any number up to 999 trillion – including Indian lakh and crore. Web page: https://calcbright.com/number-to-words-converter

Input parameters:

- `system` (string): Numbering system
- `unit` (string): Currency for cheques
- `value` (string): Number

### `ohms_law_calculator` (~199 tokens)

Ohm’s Law Calculator

Enter any two of volts, amps, ohms and watts to get the other two. Also converts watts to amps for DC, single-phase and three-phase AC with power factor. Web page: https://calcbright.com/ohms-law-calculator

Input parameters:

- `amps` (number): Current (A)
- `i` (number): Current (I) (A)
- `mode` (string): Calculate
- `p` (number): Power (P) (W)
- `pf` (number): Power factor 1 for heaters and incandescent lamps; about 0.8–0.95 for motors and electronics.
- `phase` (string): Circuit
- `r` (number): Resistance (R) (Ω)
- `solve` (string): Find
- `v` (number): Voltage (V) (V)
- `volts` (number): Voltage (V)
- `watts` (number): Power (W)

### `one_rep_max_calculator` (~114 tokens)

One Rep Max Calculator

Estimate your bench, squat or deadlift max from a submaximal set: Epley, Brzycki and Lombardi 1RM side by side, plus a % of 1RM table for programming. Web page: https://calcbright.com/one-rep-max-calculator

Input parameters:

- `reps` (number): Reps completed (reps) Most accurate with 2–10 reps taken close to failure.
- `unit` (string): Unit
- `weight` (number): Weight lifted

### `overtime_calculator` (~108 tokens)

Overtime Calculator

Time and a half on $20 an hour is $30. Enter your rate plus regular and overtime hours to see overtime pay, double time and gross pay for the week. Web page: https://calcbright.com/overtime-calculator

Input parameters:

- `currency` (string): Currency
- `multiplier` (string): Overtime rate
- `overtime` (number): Overtime hours (hrs)
- `rate` (number): Hourly rate
- `regular` (number): Regular hours (hrs)

### `ovulation_calculator` (~114 tokens)

Ovulation Calculator

Pinpoint your likely ovulation day and six-day fertile window from your last period and cycle length, with the dates mapped out for your next four cycles. Web page: https://calcbright.com/ovulation-calculator

Input parameters:

- `cycle` (number): Average cycle length (days)
- `date` (string): First day of your last period (YYYY-MM-DD)
- `luteal` (number): Luteal phase length (days) Days from ovulation to your next period – 14 for most people.

### `p_value_calculator` (~119 tokens)

P-Value Calculator

Turn a z, t, chi-square or F statistic into a left-, right- or two-tailed p-value, with critical values and whether it is significant at 0.05 and 0.01. Web page: https://calcbright.com/p-value-calculator

Input parameters:

- `df1` (number): Degrees of freedom (df)
- `df2` (number): Denominator df (df₂)
- `dist` (string): Test statistic
- `stat` (number): z value
- `tail` (string): Tail

### `pace_calculator` (~158 tokens)

Pace Calculator

10 km in 50 minutes is 5:00 per km or 8:03 per mile. Get running pace and speed from any distance and time, or your finish time for a 5K to a marathon. Web page: https://calcbright.com/pace-calculator

Input parameters:

- `distUnit` (string): Unit
- `distance` (number): Custom distance
- `h` (number): Time (h)
- `m` (number): (min)
- `mode` (string): Calculate
- `paceUnit` (string): Per
- `pm` (number): Pace (min)
- `preset` (string): Distance
- `ps` (number): (s)
- `s` (number): (s)

### `paint_calculator` (~174 tokens)

Paint Calculator

A 12 × 12 ft room needs about 2 gallons for two coats. Enter room size, doors, windows and coats to get the wall area and the gallons or liters to buy. Web page: https://calcbright.com/paint-calculator

Input parameters:

- `ceiling` (string): Paint the ceiling too?
- `coats` (number): Coats
- `coverage` (number): Coverage (sq ft per gallon) Leave blank for a typical 350 sq ft per gallon (10 m² per liter). Check the paint can.
- `doors` (number): Doors
- `height` (number): Wall height (ft)
- `length` (number): Room length (ft)
- `unit` (string): Units
- `width` (number): Room width (ft)
- `windows` (number): Windows

### `password_generator` (~135 tokens)

Password Generator

Make a random 8–64 character password from letters, digits and symbols and see its entropy in bits. Created on your device with crypto.getRandomValues. Web page: https://calcbright.com/password-generator

Input parameters:

- `digits` (string): Numbers (0–9)
- `length` (number): Password length (characters)
- `lower` (string): Lowercase (a–z)
- `similar` (string): Exclude look-alike characters (I l 1 | O 0 o)
- `symbols` (string): Symbols (!@#…)
- `upper` (string): Uppercase (A–Z)

### `pay_raise_calculator` (~151 tokens)

Pay Raise Calculator

A 5% pay raise on $60,000 adds $3,000 a year. Enter a salary or hourly wage and a raise % or new figure to see the increase per year, month, week and hour. Web page: https://calcbright.com/pay-raise-calculator

Input parameters:

- `currency` (string): Currency
- `current` (number): Current annual salary
- `hours` (number): Hours per week (hrs) Used to convert between hourly and annual pay (52 weeks)
- `method` (string): Raise given as
- `newPay` (number): New annual salary
- `payType` (string): Pay is
- `raise` (number): Raise (%)

### `percent_error_calculator` (~91 tokens)

Percent Error Calculator

Measured 9.6 when the accepted value is 9.81? That is a 2.14% error. Get percent, absolute, relative and signed error for lab reports and experiments. Web page: https://calcbright.com/percent-error-calculator

Input parameters:

- `actual` (number): Theoretical (true) value
- `measured` (number): Experimental (measured) value

### `percentage_change_calculator` (~113 tokens)

Percentage Change Calculator

80 to 100 is a 25% increase but only a 22.22% difference. Get percent change, the percentage difference, or reverse a % change back to the original value. Web page: https://calcbright.com/percentage-change-calculator

Input parameters:

- `a` (number): Old (starting) value
- `b` (number): New (final) value
- `dir` (string): Direction
- `mode` (string): Calculate
- `pct` (number): Percentage (%)

### `period_calculator` (~111 tokens)

Period Calculator

Predict your next six periods from the date your last one started and your cycle length, with ovulation days and fertile windows on the same calendar. Web page: https://calcbright.com/period-calculator

Input parameters:

- `cycle` (number): Average cycle length (days) From the first day of one period to the first day of the next – 28 on average.
- `date` (string): First day of your last period (YYYY-MM-DD)
- `length` (number): Period length (days)

### `permutation_combination_calculator` (~87 tokens)

Permutation & Combination

Choosing 3 from 10 items gives 720 ordered arrangements (nPr) or 120 combinations (nCr). Get both, plus repetition cases and n factorial, with exact big numbers. Web page: https://calcbright.com/permutation-combination-calculator

Input parameters:

- `n` (number): Total items (n)
- `r` (number): Items chosen (r)

### `pregnancy_due_date_calculator` (~98 tokens)

Pregnancy Due Date Calculator

Your due date is 280 days from your last period, adjusted here for cycle length. Also works from a conception or IVF transfer date, with weeks pregnant today. Web page: https://calcbright.com/pregnancy-due-date-calculator

Input parameters:

- `cycle` (number): Average cycle length (days)
- `date` (string): First day of last period (YYYY-MM-DD)
- `method` (string): Calculate from

### `prime_number_checker` (~88 tokens)

Prime Number Checker

Is 91 prime? No – it is 7 × 13. Test any whole number up to one trillion, see its smallest factor and prime factorization, and find the nearest primes. Web page: https://calcbright.com/prime-number-checker

Input parameters:

- `n` (number): Whole number Any whole number from 0 to 1,000,000,000,000.

### `profit_margin_calculator` (~100 tokens)

Profit Margin Calculator

$60 cost and a $100 price is a 40% profit margin but a 66.67% markup. Enter cost and revenue for gross profit, margin and markup, and prices for target margins. Web page: https://calcbright.com/profit-margin-calculator

Input parameters:

- `cost` (number): Cost What the item or sale cost you
- `currency` (string): Currency
- `revenue` (number): Revenue (selling price)

### `prorated_rent_calculator` (~106 tokens)

Prorated Rent Calculator

Moving in on 11 March with $1,500 rent costs $1,016.13 for the first month. Enter the rent and your move date to get the exact partial-month charge. Web page: https://calcbright.com/prorated-rent-calculator

Input parameters:

- `currency` (string): Currency
- `date` (string): Move date (YYYY-MM-DD)
- `mode` (string): Calculate for
- `rent` (number): Monthly rent

### `protein_calculator` (~103 tokens)

Protein Calculator

How many grams of protein a day? From the 0.8 g/kg RDA to 2.2 g/kg for muscle gain, see your daily range for your body weight and activity or training goal. Web page: https://calcbright.com/protein-calculator

Input parameters:

- `kg` (number): Weight (kg)
- `lb` (number): Weight (lb)
- `level` (string): Activity / goal
- `units` (string): Units

### `pythagorean_theorem_calculator` (~120 tokens)

Pythagorean Theorem Calc

Legs of 3 and 4 give a hypotenuse of 5. Solve a² + b² = c² for any side of a right triangle, with exact radicals like 5√2, the angles, area and full working. Web page: https://calcbright.com/pythagorean-theorem-calculator

Input parameters:

- `a` (number): Leg a
- `b` (number): Leg b
- `c` (number): Hypotenuse c
- `solve` (string): Solve for

### `quadratic_equation_solver` (~96 tokens)

Quadratic Equation Solver

Solve ax² + bx + c = 0 with the quadratic formula: the discriminant, real or complex roots and the vertex of the parabola, with every step written out. Web page: https://calcbright.com/quadratic-equation-solver

Input parameters:

- `a` (number): a (x² coefficient)
- `b` (number): b (x coefficient)
- `c` (number): c (constant)

### `ramadan_countdown_calculator` (~94 tokens)

Ramadan Countdown

How many days until Ramadan, Eid al-Fitr and Eid al-Adha? Live countdown using the official Umm al-Qura calendar used in Saudi Arabia, UAE and the GCC. Web page: https://calcbright.com/ramadan-countdown-calculator

Input parameters:

- `event` (string): Count down to
- `from` (string): From date Leave empty to count from today. (YYYY-MM-DD)

### `random_number_generator` (~118 tokens)

Random Number Generator

Draw one number or up to 1,000 from any range – whole or decimal, with or without repeats. Useful for raffles, lottery picks, dice rolls and classroom draws. Web page: https://calcbright.com/random-number-generator

Input parameters:

- `count` (number): How many numbers
- `decimals` (number): Decimal places
- `kind` (string): Type
- `max` (number): Maximum
- `min` (number): Minimum
- `sort` (string): Order
- `unique` (string): Allow duplicates?

### `ratio_calculator` (~104 tokens)

Ratio Calculator

Solve A:B = C:D for the missing value or reduce a ratio to lowest terms – 1920:1080 becomes 16:9. Handy for recipes, screen sizes, map scales and mixes. Web page: https://calcbright.com/ratio-calculator

Input parameters:

- `a` (number): A
- `b` (number): B
- `c` (number): C
- `d` (number): D
- `mode` (string): Calculation

### `redundancy_pay_calculator` (~133 tokens)

Redundancy Pay Calculator

UK statutory redundancy pay calculator for 2026/27: age bands, up to 20 years’ service and the new £751 weekly pay cap (£783 in Northern Ireland). Web page: https://calcbright.com/redundancy-pay-calculator

Input parameters:

- `age` (number): Age at redundancy (years)
- `pay` (number): Weekly pay (before tax) Average gross weekly pay over the last 12 weeks.
- `region` (string): Where do you work?
- `years` (number): Full years of service (years) Only complete years count; the last 20 are used.

### `refinance_calculator` (~133 tokens)

Refinance Calculator

Will a lower rate pay off? This refinance calculator compares your current and new mortgage payments, finds the break-even month and the lifetime interest. Web page: https://calcbright.com/refinance-calculator

Input parameters:

- `balance` (number): Current loan balance
- `closing` (number): Closing costs Paid upfront (not rolled into the loan).
- `currency` (string): Currency
- `newRate` (number): New interest rate (%)
- `newTerm` (number): New loan term (years)
- `rate` (number): Current interest rate (%)
- `remaining` (number): Years remaining (years)

### `rent_affordability_calculator` (~111 tokens)

Rent Affordability

A $60,000 salary supports about $1,500 rent. This rent affordability calculator applies the 30% rule, the landlord 40x test and your monthly debts. Web page: https://calcbright.com/rent-affordability-calculator

Input parameters:

- `currency` (string): Currency
- `debts` (number): Monthly debt payments Car, student loan, card minimums.
- `income` (number): Gross income (before tax)
- `period` (string): Income is

### `rent_vs_buy_calculator` (~254 tokens)

Rent vs. Buy Calculator

This rent vs buy calculator weighs the true cost of owning – interest, tax, upkeep, lost returns and equity – against renting, to find the break-even year. Web page: https://calcbright.com/rent-vs-buy-calculator

Input parameters:

- `appreciation` (number): Home price growth / year (%)
- `buyCostPct` (number): Buying closing costs (%)
- `currency` (string): Currency
- `downPct` (number): Down payment (%)
- `insurance` (number): Home insurance / year
- `invest` (number): Investment return / year (%) What the down payment could earn if invested instead
- `maintPct` (number): Maintenance / year (%) % of home value
- `price` (number): Home price
- `rate` (number): Mortgage rate (%)
- `rent` (number): Monthly rent
- `rentIncrease` (number): Rent increase / year (%)
- `sellPct` (number): Selling costs (%) Agent fees, transfer tax, etc.
- `taxPct` (number): Property tax / year (%) % of home value
- `term` (number): Loan term (years)
- `years` (number): Years you plan to stay (years)

### `retirement_calculator` (~160 tokens)

Retirement Calculator

$800 a month from age 35 at 7% grows to about $1.38 million by 65. This retirement calculator projects your nest egg and how long withdrawals will last. Web page: https://calcbright.com/retirement-calculator

Input parameters:

- `age` (number): Current age (years)
- `currency` (string): Currency
- `monthly` (number): Monthly contribution
- `rate` (number): Expected return (before retiring) (%)
- `retireAge` (number): Retirement age (years)
- `retireRate` (number): Return during retirement (%)
- `savings` (number): Current retirement savings
- `withdrawal` (number): Monthly withdrawal in retirement
- `years` (number): Years in retirement (years)

### `roi_calculator` (~116 tokens)

ROI Calculator

Turning $10,000 into $15,000 is a 50% return, or 14.47% a year over 3 years. This ROI calculator shows total ROI, net profit and the annualized rate. Web page: https://calcbright.com/roi-calculator

Input parameters:

- `currency` (string): Currency
- `invested` (number): Amount invested
- `returned` (number): Amount returned (final value)
- `years` (number): Investment length (optional) (years) Needed for annualized ROI.

### `roman_numeral_converter` (~98 tokens)

Roman Numeral Converter

MCMXCIX is 1999 and 2026 is MMXXVI. Convert any number from 1 to 3999 into Roman numerals, or decode a numeral back to a number, with each symbol explained. Web page: https://calcbright.com/roman-numeral-converter

Input parameters:

- `mode` (string): Convert
- `number` (number): Number
- `roman` (string): Roman numeral

### `roth_ira_calculator` (~200 tokens)

Roth IRA Calculator

Check the 2026 Roth IRA limit ($7,500, or $8,600 at 50+) and the income phase-out for your MAGI, then project your tax-free balance against a taxable account. Web page: https://calcbright.com/roth-ira-calculator

Input parameters:

- `age` (number): Current age (years)
- `balance` (number): Current Roth IRA balance
- `contribution` (number): Annual contribution 2026 limit: $7,500, or $8,600 at 50+.
- `filing` (string): Filing status
- `magi` (number): Modified AGI (MAGI)
- `rate` (number): Expected annual return (%)
- `retireAge` (number): Retirement age (years)
- `taxRate` (number): Tax on gains in a taxable account (%) Applied to growth each year – e.g. 15% long-term capital-gains rate.

### `rrsp_calculator` (~242 tokens)

RRSP Calculator

New 2026 RRSP room is 18% of 2025 earned income, up to $33,810. See your room, the tax refund a contribution earns in your province and growth to retirement. Web page: https://calcbright.com/rrsp-calculator

Input parameters:

- `age` (number): Current age (years)
- `balance` (number): Current RRSP balance
- `contribution` (number): RRSP contribution
- `earned` (number): Earned income 2025 Last year’s earned income sets this year’s new room (18%).
- `income` (number): Taxable income 2026 Used to work out your tax refund.
- `pa` (number): Pension adjustment (PA) Box 52 of last year’s T4, if you have a workplace pension.
- `rate` (number): Expected annual return (%)
- `region` (string): Province / territory
- `retireAge` (number): Retirement age (years) RRSPs must be converted by the end of the year you turn 71.
- `unused` (number): Unused room carried forward From your CRA notice of assessment.

### `rule_of_72_calculator` (~86 tokens)

Rule of 72 Calculator

At 8% a year, money doubles in 72 ÷ 8 = 9 years. Enter any rate to compare the Rule of 72, the Rule of 69.3 and the exact compound-growth answer. Web page: https://calcbright.com/rule-of-72-calculator

Input parameters:

- `rate` (number): Annual rate of return (%)

### `sales_tax_calculator` (~133 tokens)

Sales Tax Calculator

Add sales tax to a price or pull it out of a receipt: $127.50 at 6.25% is $120 before tax. Works with any combined state, county and city sales tax rate. Web page: https://calcbright.com/sales-tax-calculator

Input parameters:

- `amount` (number): Price before tax
- `currency` (string): Currency
- `mode` (string): Calculation
- `rate` (number): Your rate (optional) (%) Leave empty for the state/province rate, or enter your combined state + local rate.
- `region` (string): State / province

### `sample_size_calculator` (~122 tokens)

Sample Size Calculator

385 responses give ±5% at 95% confidence. Get the survey sample size for any confidence level, margin of error and proportion, with small-population correction. Web page: https://calcbright.com/sample-size-calculator

Input parameters:

- `conf` (string): Confidence level
- `margin` (number): Margin of error (±%)
- `p` (number): Expected proportion (%) Use 50% if unsure – it gives the largest, safest sample.
- `population` (number): Population size Optional – leave blank for a large or unknown population.

### `saudi_end_of_service_calculator` (~137 tokens)

Saudi End of Service

Saudi end of service award: half a month’s wage a year for the first 5 years, a full month after, reduced on resignation (Labour Law Art. 84–85). Web page: https://calcbright.com/saudi-end-of-service-calculator

Input parameters:

- `end` (string): End date Leave empty to use today's date. (YYYY-MM-DD)
- `reason` (string): How did employment end?
- `start` (string): Start date (YYYY-MM-DD)
- `wage` (number): Last monthly wage Basic salary plus fixed allowances such as housing (as defined in your contract).

### `savings_goal_calculator` (~108 tokens)

Savings Goal Calculator

Need $50,000 in 5 years? This savings goal calculator shows the monthly deposit to hit any target by your deadline, counting current savings and interest. Web page: https://calcbright.com/savings-goal-calculator

Input parameters:

- `currency` (string): Currency
- `current` (number): Already saved
- `goal` (number): Savings goal
- `rate` (number): Annual interest / return (%)
- `years` (number): Time to reach goal (years)

### `scientific_calculator` (~136 tokens)

Scientific Calculator

Type 2^10 + √144 × sin(30) the way you would write it and get each step back. Handles powers, roots, trig, logs, factorials, nCr and π in degrees or radians. Web page: https://calcbright.com/scientific-calculator

Input parameters:

- `angle` (string): Angle unit
- `expr` (string): Expression Use + − × ÷ ^ ( ) ! %, π, e and functions like sin, cos, tan, sqrt, ln, log, nCr(5, 2). 2π and 3(4+1) multiply automatically.

### `scientific_notation_converter` (~128 tokens)

Scientific Notation Converter

299,792,458 is 2.99792458 × 10⁸. Convert any number to scientific, E- or engineering notation and back to standard form, digit-exact even at 10⁻³⁰⁰. Web page: https://calcbright.com/scientific-notation-converter

Input parameters:

- `number` (string): Number Enter a standard number, E-notation (1.5E-7) or scientific notation (1.5 × 10^-7).
- `sig` (number): Significant figures Optional – round the mantissa

### `self_employment_tax_calculator` (~197 tokens)

Self-Employment Tax Calculator

1099 income? See the 15.3% SE tax on 92.35% of your profit, the half-SE deduction, 2026 federal income tax and what each quarterly estimated payment should be. Web page: https://calcbright.com/self-employment-tax-calculator

Input parameters:

- `filing` (string): Filing status
- `other` (number): Other taxable income Spouse's wages if filing jointly, interest, etc.
- `profit` (number): Net self-employment profit Schedule C income minus business expenses (1099 income after expenses).
- `qbi` (string): 20% QBI deduction (Section 199A)
- `wages` (number): W-2 wages (yours) Wages already subject to Social Security reduce the SE wage base.
- `withheld` (number): Federal tax already withheld From W-2 paychecks – reduces the estimated payments you need to make.

### `shoe_size_converter` (~87 tokens)

Shoe Size Converter

A US men's 9 is a UK 8.5, an EU 42.5 and 27 cm. Convert adult shoe sizes between US men's, US women's, UK, EU and Japanese cm before you order from abroad. Web page: https://calcbright.com/shoe-size-converter

Input parameters:

- `size` (number): Size
- `system` (string): Size system

### `significant_figures_calculator` (~121 tokens)

Sig Fig Calculator

Does 0.004050 have 3 or 4 sig figs? Paste any number to see which digits are significant and the rule behind each one, then round it to as many as you need. Web page: https://calcbright.com/significant-figures-calculator

Input parameters:

- `number` (string): Number Type it exactly as written – trailing zeros matter. Scientific notation like 6.02e23 or 6.02 × 10^23 works too.
- `round` (number): Round to (sig figs) Optional

### `simple_interest_calculator` (~113 tokens)

Simple Interest Calculator

$10,000 at 5% for 3 years earns $1,500. This simple interest calculator applies I = P × r × t with the term in years, months or days and shows the total due. Web page: https://calcbright.com/simple-interest-calculator

Input parameters:

- `currency` (string): Currency
- `principal` (number): Principal
- `rate` (number): Annual interest rate (% / yr)
- `time` (number): Time
- `unit` (string): Unit

### `sip_calculator` (~103 tokens)

SIP Calculator

₹10,000 a month for 10 years at 12% could reach ₹23.23 lakh. This SIP calculator splits a mutual fund maturity value into what you put in and what it earned. Web page: https://calcbright.com/sip-calculator

Input parameters:

- `amount` (number): Monthly SIP amount
- `currency` (string): Currency
- `rate` (number): Expected annual return (%)
- `years` (number): Investment period (years)

### `sleep_calculator` (~110 tokens)

Sleep Calculator

Up at 7:00 AM? Aim for bed at 9:45 or 11:15 PM. Count back whole 90-minute sleep cycles to pick a bedtime or alarm that lands in light sleep, not deep sleep. Web page: https://calcbright.com/sleep-calculator

Input parameters:

- `latency` (number): Time to fall asleep (min)
- `mode` (string): I want to…
- `time` (string): Wake-up time (HH:MM, 24-hour)

### `slope_calculator` (~103 tokens)

Slope Calculator

Two points in, the whole line out: slope as a fraction, y = mx + b, point-slope and standard form, the angle, distance and midpoint, each with its working. Web page: https://calcbright.com/slope-calculator

Input parameters:

- `x1` (number): x₁
- `x2` (number): x₂
- `y1` (number): y₁
- `y2` (number): y₂

### `social_security_calculator` (~158 tokens)

Social Security Calculator

Claim at 62 and get 70% of your benefit; wait until 70 and get 124%. Estimate your PIA with the 2026 bend points and compare every claiming age from 62 to 70. Web page: https://calcbright.com/social-security-calculator

Input parameters:

- `aime` (number): Average indexed monthly earnings (AIME) Average of your highest 35 years of wage-indexed earnings ÷ 420.
- `birthYear` (number): Year of birth
- `claimAge` (number): Age you start benefits (years)
- `mode` (string): Earnings input
- `salary` (number): Average annual earnings Your typical career earnings in today's dollars, assuming 35+ years of work.

### `speed_distance_time_calculator` (~137 tokens)

Speed Distance Time

150 km in 2 h 30 min is 60 km/h. Give any two of speed, distance and time to get the third, mixing km, miles, km/h and mph freely, with the working shown. Web page: https://calcbright.com/speed-distance-time-calculator

Input parameters:

- `distUnit` (string): Distance unit
- `distance` (number): Distance
- `hours` (number): Time – hours
- `minutes` (number): Time – minutes
- `mode` (string): Solve for
- `speed` (number): Speed
- `speedUnit` (string): Speed unit

### `square_footage_calculator` (~153 tokens)

Square Footage Calculator

A 12 × 15 ft room is 180 sq ft. Measure rectangles, L-shaped rooms, circles or triangles and get sq ft, m², square yards, acres and the cost at your price. Web page: https://calcbright.com/square-footage-calculator

Input parameters:

- `a` (number): Length (ft)
- `b` (number): Width (ft)
- `c` (number): Part 2 length (ft)
- `currency` (string): Currency
- `d` (number): Part 2 width (ft)
- `price` (number): Price per sq ft (optional)
- `shape` (string): Shape
- `unit` (string): Units

### `square_root_calculator` (~97 tokens)

Square Root Calculator

√72 simplifies to 6√2 ≈ 8.4852813742. Get square, cube or any nth root to 10 decimal places, the simplest radical form and a check that squares back. Web page: https://calcbright.com/square-root-calculator

Input parameters:

- `n` (number): Root (index) 2 = square root, 3 = cube root…
- `x` (number): Number

### `stamp_duty_calculator` (~106 tokens)

Stamp Duty Calculator

UK stamp duty calculator 2026: SDLT in England & NI, LBTT in Scotland and LTT in Wales – with first-time buyer relief, second-home and non-resident rates. Web page: https://calcbright.com/stamp-duty-calculator

Input parameters:

- `buyer` (string): Buyer type
- `nonResident` (string): Non-UK resident buyer?
- `price` (number): Purchase price
- `region` (string): Where is the property?

### `standard_deviation_calculator` (~91 tokens)

Standard Deviation Calculator

Sample (n − 1) or population (N)? Paste your data and get both standard deviations, the variance and mean, with a deviation-by-deviation table you can check. Web page: https://calcbright.com/standard-deviation-calculator

Input parameters:

- `numbers` (string): Data set Separate values with commas, spaces or new lines.
- `type` (string): Data is a…

### `student_loan_repayment_calculator` (~146 tokens)

UK Student Loan Repayment Calculator

UK student loan repayment calculator for 2026/27: monthly repayments on Plans 1, 2, 4, 5 and Postgraduate, interest, years to repay and write-off. Web page: https://calcbright.com/student-loan-repayment-calculator

Input parameters:

- `balance` (number): Loan balance
- `growth` (number): Salary growth per year (%) Thresholds are kept at their 2026/27 level.
- `plan` (string): Repayment plan
- `salary` (number): Annual salary (before tax)
- `yearsRepaying` (number): Years since repayments started (years) Counts towards the write-off date.

### `take_home_pay_calculator` (~241 tokens)

Take-Home Pay Calculator

Net pay after tax in 166 countries: $75,000 in Texas leaves about $61,592, £50,000 in the UK £39,520. Income tax and social contributions, line by line. Web page: https://calcbright.com/take-home-pay-calculator

Input parameters:

- `bahrain` (string): Nationality
- `country` (string): Country
- `filing` (string): Filing status
- `otherRate` (number): Effective income tax rate (%)
- `provRate` (number): Provincial income tax (effective) (%) Optional – provincial tax is added on top of federal tax, CPP and EI.
- `region` (string): State
- `retirement` (number): 401(k) / pre-tax contributions (% of pay)
- `salary` (number): Gross annual salary
- `social` (number): Social insurance contribution (%) There is no personal income tax. Nationals pay social insurance (e.g. GOSI, GPSSA) – enter your rate if it applies.
- `stateRate` (number): State income tax rate (%) Your state has progressive rates – enter your approximate effective state rate.

### `tax_free_salary_equivalent_calculator` (~194 tokens)

Tax-Free Salary Equivalent

Convert a tax-free Gulf salary (AED, SAR, QAR, KWD, BHD, OMR) into the gross salary you would need in the US, UK or Canada to take home the same pay. Web page: https://calcbright.com/tax-free-salary-equivalent-calculator

Input parameters:

- `country` (string): Compare with
- `from` (string): Currency
- `provRate` (number): Provincial income tax rate (effective) (%) Provincial tax is added on top of federal tax, CPP and EI – enter your approximate effective rate.
- `province` (string): Province / territory
- `salary` (number): Tax-free monthly salary in the Gulf Total monthly pay including housing and transport allowances.
- `state` (string): State
- `stateRate` (number): State income tax rate (effective) (%) This state has progressive brackets – enter your approximate effective rate.

### `tdee_calculator` (~204 tokens)

TDEE Calculator

Your maintenance calories are BMR × an activity factor. Get yours with Mifflin–St Jeor or Katch–McArdle, plus daily targets to lose or gain 0.25–1 kg a week. Web page: https://calcbright.com/tdee-calculator

Input parameters:

- `activity` (string): Activity level
- `age` (number): Age (years)
- `bodyFat` (number): Body fat (optional, for Katch–McArdle) (%) Leave blank if you don’t know it – Mifflin–St Jeor only needs height, weight, age and sex.
- `cm` (number): Height (cm)
- `ft` (number): Height (ft)
- `inch` (number): (in)
- `kg` (number): Weight (kg)
- `lb` (number): Weight (lb)
- `sex` (string): Sex
- `units` (string): Units

### `tfsa_calculator` (~182 tokens)

TFSA Calculator

Eligible since 2009? Your TFSA limit is $109,000 in 2026. Subtract what you put in, add back past withdrawals, and see your room and how the account could grow. Web page: https://calcbright.com/tfsa-calculator

Input parameters:

- `annual` (number): Future yearly contribution
- `balance` (number): Current TFSA balance
- `contributed` (number): Total contributed so far All contributions ever, including 2026.
- `eligible` (number): Year you turned 18 (or became a resident) Room starts in 2009 at the earliest.
- `rate` (number): Expected annual return (%)
- `withdrawn` (number): Withdrawals before 2026 Withdrawals made in 2026 are added back next year.
- `years` (number): Years to grow (years)

### `time_duration_calculator` (~119 tokens)

Time Duration Calculator

9:15 AM to 5:45 PM is 8 h 30 min, or 8.5 hours. Get the time between any two clock times, overnight shifts included, in hours and minutes, decimal and minutes. Web page: https://calcbright.com/time-duration-calculator

Input parameters:

- `end` (string): End time An end time earlier than the start is treated as the next day. (HH:MM, 24-hour)
- `start` (string): Start time (HH:MM, 24-hour)

### `time_to_decimal_converter` (~118 tokens)

Time to Decimal Converter

2 h 45 min is 2.75 hours, not 2.45. Turn hours, minutes and seconds into decimal hours for timesheets and payroll, or turn 7.8 h back into 7 h 48 min. Web page: https://calcbright.com/time-to-decimal-converter

Input parameters:

- `decimal` (number): Decimal hours (h)
- `hours` (number): Hours
- `minutes` (number): Minutes
- `mode` (string): Convert
- `seconds` (number): Seconds

### `tip_calculator` (~105 tokens)

Tip Calculator

An 18% tip on $84 is $15.12. Enter the bill, pick a percentage and split the total between any number of people, with 10% to 25% tips compared side by side. Web page: https://calcbright.com/tip-calculator

Input parameters:

- `bill` (number): Bill amount
- `currency` (string): Currency
- `people` (number): Split between (people)
- `tip` (number): Tip percentage (%)

### `triangle_calculator` (~142 tokens)

Triangle Calculator

Know three parts of a triangle? Get the other three, plus area, perimeter, type and a scale drawing. SSS, SAS, ASA, AAS and the SSA ambiguous case all work. Web page: https://calcbright.com/triangle-calculator

Input parameters:

- `a` (number): Side a
- `angA` (number): Angle A (°)
- `angB` (number): Angle B (°)
- `angC` (number): Angle C (between a and b) (°)
- `b` (number): Side b
- `c` (number): Side c
- `mode` (string): What do you know?

### `uae_corporate_tax_calculator` (~200 tokens)

UAE Corporate Tax Calculator

Calculate UAE corporate tax: 0% up to AED 375,000 and 9% above, Small Business Relief (revenue ≤ AED 3M, to 2029) and the 0% free zone regime. Web page: https://calcbright.com/uae-corporate-tax-calculator

Input parameters:

- `nonQualIncome` (number): Taxable income from non-qualifying activities
- `nonQualRevenue` (number): Non-qualifying revenue (de minimis test) Must not exceed 5% of total revenue or AED 5 million, whichever is lower.
- `period` (string): Tax period ends
- `profit` (number): Taxable income (adjusted net profit) Accounting profit after the CT adjustments (e.g. 50% of entertainment, exempt dividends, loss relief).
- `regime` (string): Business type
- `revenue` (number): Annual revenue

### `uae_gratuity_calculator` (~159 tokens)

UAE Gratuity Calculator

AED 10,000 basic for 7 years earns AED 55,000 in gratuity. Check your UAE end-of-service benefit: 21 days’ pay a year for 5 years, then 30, under the 2021 law. Web page: https://calcbright.com/uae-gratuity-calculator

Input parameters:

- `basic` (number): Last basic monthly salary Basic salary only – excluding housing, transport and other allowances.
- `end` (string): Last working day Leave empty to use today's date. (YYYY-MM-DD)
- `start` (string): Joining date (YYYY-MM-DD)
- `unpaid` (number): Unpaid leave days (days) Days of unpaid absence are excluded from service.

### `unit_price_calculator` (~173 tokens)

Unit Price Calculator

A 500 g pack at $3.99 costs $0.80 per 100 g, so a 1 kg pack at $7.20 ($0.72) is the better buy. Compare up to three sizes in mixed units to find the lowest price. Web page: https://calcbright.com/unit-price-calculator

Input parameters:

- `currency` (string): Currency
- `p1` (number): Product A price
- `p2` (number): Product B price
- `p3` (number): Product C price
- `q1` (number): Size
- `q2` (number): Size
- `q3` (number): Size
- `u1` (string): Unit
- `u2` (string): Unit
- `u3` (string): Unit

### `unix_timestamp_converter` (~125 tokens)

Unix Timestamp Converter

1700000000 is 2023-11-14T22:13:20Z. Paste an epoch value in seconds or milliseconds to get a readable UTC and ISO 8601 date, or turn a date into a timestamp. Web page: https://calcbright.com/unix-timestamp-converter

Input parameters:

- `dt` (string): Date and time (UTC) Empty = now. (YYYY-MM-DDTHH:MM)
- `mode` (string): Convert
- `ts` (number): Unix timestamp Seconds or milliseconds – detected automatically. Empty = now.

### `vat_calculator` (~130 tokens)

VAT Calculator

Removing 20% VAT means dividing by 1.2, not taking 20% off. Add or strip VAT at any rate, with 2026 standard rates for 177 countries, UK to UAE. Web page: https://calcbright.com/vat-calculator

Input parameters:

- `amount` (number): Net amount (excl. VAT)
- `country` (string): Country
- `currency` (string): Currency
- `mode` (string): Calculation
- `rate` (number): Other rate (optional) (%) Leave empty for the country’s standard rate, or enter a reduced rate.

### `volume_calculator` (~105 tokens)

Volume Calculator

A 30 × 20 × 10 cm box holds exactly 6 litres. Get the volume of a cube, box, cylinder, sphere, cone or pyramid with its formula, in litres and gallons too. Web page: https://calcbright.com/volume-calculator

Input parameters:

- `shape` (string): Shape
- `unit` (string): Unit
- `x` (number): Length
- `y` (number): Width
- `z` (number): Height

### `waist_to_hip_ratio_calculator` (~170 tokens)

Waist-to-Hip Ratio Calculator

A waist of 86 cm over hips of 100 cm gives a WHR of 0.86. Enter your measurements in cm or inches and compare with the WHO thresholds of 0.90 and 0.85. Web page: https://calcbright.com/waist-to-hip-ratio-calculator

Input parameters:

- `hipCm` (number): Hips (widest point) (cm)
- `hipIn` (number): Hips (widest point) (in)
- `sex` (string): Sex
- `units` (string): Units
- `waistCm` (number): Waist (narrowest point / at navel) (cm)
- `waistIn` (number): Waist (narrowest point / at navel) (in)

### `water_intake_calculator` (~114 tokens)

Water Intake Calculator

A 70 kg adult who exercises 30 minutes a day needs about 2.8 L of water. Get your own daily target in litres, cups and ounces from weight, exercise and climate. Web page: https://calcbright.com/water-intake-calculator

Input parameters:

- `climate` (string): Climate
- `kg` (number): Weight (kg)
- `lb` (number): Weight (lb)
- `minutes` (number): Exercise per day (min)
- `units` (string): Units

### `week_number_calculator` (~89 tokens)

Week Number Calculator

January 1, 2026 is in ISO week 1, which began on December 29, 2025. Get the week number of any date, its Monday and Sunday, the day of the year and days left. Web page: https://calcbright.com/week-number-calculator

Input parameters:

- `date` (string): Date Leave empty to use today's date. (YYYY-MM-DD)

### `weighted_average_calculator` (~206 tokens)

Weighted Average Calculator

Scores of 85, 90 and 78 weighted 30%, 20% and 50% average 82.5, not 84.3. Enter up to six values with their weights and see the working and the simple average. Web page: https://calcbright.com/weighted-average-calculator

Input parameters:

- `v1` (number): Value 1
- `v2` (number): Value 2
- `v3` (number): Value 3
- `v4` (number): Value 4
- `v5` (number): Value 5
- `v6` (number): Value 6
- `w1` (number): Weight 1
- `w2` (number): Weight 2
- `w3` (number): Weight 3
- `w4` (number): Weight 4
- `w5` (number): Weight 5
- `w6` (number): Weight 6

### `word_counter` (~66 tokens)

Word Counter

A 1,000-word article takes about 4 min 12 sec to read. Paste text for words, characters with and without spaces, sentences, speaking time and top keywords. Web page: https://calcbright.com/word-counter

Input parameters:

- `text` (string): Your text

### `z_score_calculator` (~134 tokens)

Z-Score Calculator

Scored 85 with a mean of 70 and SD of 10? That is z = 1.5, the 93.32nd percentile. Get z-scores, tail probabilities or the value for any percentile. Web page: https://calcbright.com/z-score-calculator

Input parameters:

- `mean` (number): Mean (μ)
- `mode` (string): Calculate
- `pct` (number): Percentile (%) Share of values below x
- `sd` (number): Standard deviation (σ)
- `x` (number): Raw score (x)
- `z` (number): z-score

### `zakat_calculator` (~263 tokens)

Zakat Calculator

Zakat is 2.5% of net wealth above the nisab. List cash, gold, silver, shares and business assets, deduct debts due now, and compare against today’s live nisab. Web page: https://calcbright.com/zakat-calculator

Input parameters:

- `basis` (string): Nisab basis
- `business` (number): Business assets Stock for sale and business cash
- `cash` (number): Cash & bank balances At home, in accounts and wallets
- `currency` (string): Currency
- `debts` (number): Debts & bills due now Immediate liabilities only – not the full balance of long-term loans
- `gold` (number): Value of gold Market value of gold you own
- `goldPrice` (number): Gold price per gram (24k) Leave empty to use today’s live market price, or type your local price.
- `investments` (number): Investments & shares Market value of shares, funds, crypto
- `receivables` (number): Money owed to you Loans you expect to be repaid
- `silver` (number): Value of silver
- `silverPrice` (number): Silver price per gram Leave empty to use today’s live market price, or type your local price.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/com-calcbright-calcbright/calcbright#diagnostics

## Score history

- 2026-10-18: 64
- 2026-10-17: 64
- 2026-10-16: 63
- 2026-10-15: 63
- 2026-10-14: 62
- 2026-10-13: 62
- 2026-10-12: 61

## Common questions

### What is the CalcBright Calculators MCP server?

CalcBright Calculators is an MCP server listed in the public MCP registry as com.calcbright/calcbright. 160+ calculators: take-home pay for 166 countries, mortgage, loan, VAT, BMI, dates, units, currency. This page covers its hosted endpoint (https://calcbright.com/mcp).

### Is the CalcBright Calculators MCP server safe to use?

CalcBright Calculators scores 64 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the CalcBright Calculators MCP server expose?

CalcBright Calculators exposes 167 tools: mortgage_calculator, loan_calculator, compound_interest_calculator, salary_calculator, percentage_calculator, and 162 more. Their descriptions and schemas cost roughly 22,761 tokens of context every time the server is loaded.

### Does the CalcBright Calculators MCP server require authentication?

No. We connected to CalcBright Calculators without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the CalcBright Calculators MCP server still maintained?

CalcBright Calculators is still listed as active in the MCP registry. We last reached this channel on 18 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://calcbright.com/mcp
- Website: https://calcbright.com/developers
- Changelog RSS feed: https://verifymcp.io/servers/com-calcbright-calcbright/calcbright.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-calcbright-calcbright/calcbright.json
- HTML version of this page: https://verifymcp.io/servers/com-calcbright-calcbright/calcbright