Browse Calculators
Pick a category to see every calculator inside it.
Finance and Loans
40 calculatorsPlan your money with confidence - from mortgage payments and loan amortization to compound interest, retirement savings and investment returns.
Mortgage payment calculator
Work out your exact monthly mortgage payment from the loan amount, interest rate and term.
Compound interest calculator
See how your savings or investments grow over time with the power of compounding.
Auto loan calculator
Calculate monthly payments and the total cost of any car loan before you sign.
Tax and Salary
25 calculatorsFrom take-home pay and paychecks to VAT, sales tax and capital gains - know exactly what you earn and what you owe.
Income tax calculator
Estimate your income tax bill in seconds, with a clear breakdown.
Take-home pay calculator
Find out what actually lands in your bank account after tax and deductions.
Tip calculator
Quickly work out the right tip for any bill, split or shared.
Health and Fitness
35 calculatorsTrack your body and your progress - BMI, calories, macros, heart-rate zones, pregnancy dates and more.
BMI calculator
Check your Body Mass Index and understand what it means for your health.
BMR calculator
Find out how many calories your body burns at rest each day.
Pregnancy due date calculator
Work out your baby's due date and see the key milestones ahead.
Math
30 calculatorsEveryday math made easy - percentages, fractions, averages, geometry and statistics, solved in one click.
Percentage calculator
Work out percentages, increases, decreases and differences instantly.
Fraction calculator
Add, subtract, multiply and divide fractions with step-by-step ease.
Average calculator
Calculate the mean of any set of numbers in seconds.
Unit Converters
30 calculatorsConvert anything to anything - length, weight, temperature, currency and more, metric to imperial and back.
Cm to inches calculator
Quickly convert centimeters to inches, feet and inches.
Kg to lbs calculator
Switch between kilograms and pounds in one click.
Celsius to Fahrenheit calculator
Convert temperatures between Celsius and Fahrenheit instantly.
Date and Time
15 calculatorsCount the days that matter - ages, countdowns, business days and date differences, all worked out for you.
Age calculator
Find out exactly how old you are, right down to the day.
Days between dates calculator
Count the days between any two dates on the calendar.
Days until/countdown calculator
See exactly how many days are left until your big event.
Home, Construction and DIY
30 calculatorsMeasure twice, buy once - square footage, paint, flooring, concrete and every material estimate your project needs.
Square footage calculator
Work out the square footage of any room or area for flooring and more.
Paint calculator
Find out exactly how much paint your project needs - no wasted cans.
Concrete calculator
Calculate the cubic yards of concrete needed for slabs and footings.
Auto
10 calculatorsThe true cost of your car - fuel, payments, depreciation, road trips and EV charging, all broken down.
Business and Online Sellers
20 calculatorsPrice it right - margins, markups, break-even points, marketplace fees and freelance rates for your business.
Profit margin calculator
See your true profit margin on any sale or product.
Break-even calculator
Find the sales volume where your business starts making money.
Shopify fee calculator
Work out exactly what Shopify takes from each order.
Education and Misc
15 calculatorsFrom GPA and grades to word counts, moving costs and fun everyday tools - a little bit of everything.
GPA calculator
Calculate your grade point average in seconds.
Word counter calculator
Count words and characters in any text instantly.
Split bill calculator
Split any bill fairly between friends, with tip included.
Frequently Asked Questions
Yes, all the online calculators on this site are free for you to use at any time. The website is supported by the advertising we feature on our pages, which keeps every calculator free forever.
No. Every calculator runs right in your browser - no accounts, no downloads and no installation. Just open the calculator, enter your numbers and get your answer.
Our calculators use standard, widely accepted formulas and are tested for accuracy. For important financial, tax or health decisions, always double-check with a qualified professional.