All calculators

33 tools across 8 categories. Everything runs locally in your browser.

Finance

· Loans, mortgages, savings, and interest.

F● Local

Mortgage Calculator

Estimate monthly payments, total interest, and repayment cost.

Finance

F● Local

Loan Payment Calculator

Work out the payment, total interest, and total cost of any loan.

Finance

F● Local

Compound Interest Calculator

See how savings grow with contributions and compounding over time.

Finance

F● Local

Simple Interest Calculator

Interest on a flat balance, without compounding.

Finance

F● Local

Savings Goal Calculator

How long to reach a savings target with regular contributions.

Finance

F● Local

Debt Payoff Calculator

How long to clear a balance and the total interest paid.

Finance

Business

· Margins, markup, break-even, and pricing.

B● Local

Profit Margin Calculator

Turn revenue and cost into profit, margin, and markup.

Business

B● Local

Markup Calculator

Turn cost and markup into a selling price.

Business

B● Local

Break-Even Calculator

Units and revenue needed to cover fixed costs.

Business

B● Local

VAT & Sales Tax Calculator

Add or remove VAT or sales tax from a price.

Business

B● Local

Freelance Rate Calculator

The hourly rate that funds your target income.

Business

B● Local

Discount Calculator

Find the sale price and how much you save.

Business

B● Local

Tip Calculator

Split a bill and work out the tip per person.

Business

Percentages

· Every everyday percentage question.

P● Local

Percentage Calculator

Answer the three everyday percentage questions.

Percentages

P● Local

Percentage Change Calculator

Increase or decrease between two numbers.

Percentages

P● Local

Reverse Percentage Calculator

Find the original amount before a percentage change.

Percentages

Health

· BMI, calories, and pace, standard formulas.

H● Local

BMI Calculator

Body Mass Index from height and weight, with context.

Health

H● Local

BMR Calculator

Basal metabolic rate, calories burned at rest.

Health

H● Local

TDEE Calculator

Total daily calories burned, activity included.

Health

H● Local

Running Pace Calculator

Pace per km or mile and average speed from distance and time.

Health

Education

· GPA, grades, and required exam scores.

E● Local

Final Grade Calculator

The exam score you need for a target grade.

Education

E● Local

Grade Percentage Calculator

Turn points earned into a percentage and letter grade.

Education

E● Local

GPA Calculator

Credit-weighted GPA across up to five courses.

Education

Dates

· Age, day counts, and timesheets.

D● Local

Age Calculator

Exact age in years, months, and days from a birth date.

Dates

D● Local

Days Between Dates

Count the days, weeks, and months between two dates.

Dates

D● Local

Business Days Calculator

Count working days (Mon to Fri) between two dates.

Dates

D● Local

Timesheet & Pay Calculator

Gross pay from hours, rate, and overtime.

Dates

Measurements

· Length, weight, volume, temperature.

M● Local

Length Converter

Convert between metric and imperial length units.

Measurements

M● Local

Weight Converter

Convert between metric and imperial weight units.

Measurements

M● Local

Temperature Converter

Convert between Celsius, Fahrenheit, and Kelvin.

Measurements

M● Local

Volume Converter

Convert between metric and US volume units.

Measurements

Everyday Math

· Averages, fractions, geometry, and more.

E● Local

Average Calculator

Mean, median, mode, range, and standard deviation.

Everyday Math

E● Local

Fraction Calculator

Add, subtract, multiply, or divide two fractions.

Everyday Math