Free online calculators for money, health, math and everyday life
Fast, accurate and easy to use. Get instant answers with clear charts and explanations.
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The tools people use most.
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Find the right calculator for any question.
Financial Calculators
Loans, mortgages, savings and investments.
- Mortgage Calculator
- Home Affordability Calculator
- Refinance Calculator
- Loan EMI Calculator
- Compound Interest Calculator
- SIP Calculator
- Savings Goal Calculator
- Loan Calculator
- Auto Loan Calculator
- Interest Calculator
- Retirement Calculator
- 401(k) Calculator
- Investment Calculator
- Inflation Calculator
- Income Tax Calculator
- Salary Calculator
- Paycheck Calculator
- Sales Tax Calculator
- Credit Card Payoff Calculator
- Debt Payoff Calculator
- Amortization Calculator
Fitness & Health Calculators
Body weight, calories, running and pregnancy.
Math Calculators
Percentages, fractions, statistics and more.
Everyday Calculators
Dates, time, school and handy tools.
Results update as you type. No buttons, no waiting.
Every calculator is free to use, with no sign-up needed.
Designed for phones first, and just as easy on a laptop.
Calculations run in your browser. Your numbers stay with you.
Calculators you can trust
Every calculator on this site is built to give you a clear, accurate answer in seconds. Type your numbers and the result appears instantly, with charts, tables and plain-English explanations so you understand exactly how it was worked out.
Planning a big purchase? Our mortgage calculator and loan calculator show your monthly payment and total interest. Growing your savings? Try the compound interest calculator or the SIP calculator. For everyday questions, the age calculator, percentage calculator and date calculator have you covered. And if you're working on your health, the BMI calculator and calorie calculator are a great place to start.
Each page also explains the formula behind the result, with worked examples and answers to common questions. All calculations happen in your browser, so the numbers you enter aren't sent anywhere. Results are estimates for general information, so for big financial or health decisions, it's always worth checking with a qualified professional.