Calculators that just work
Fast, mobile-first calculators for finance, health, and everyday life — accurate results with the formulas explained.
Browse by category
- Financial CalculatorsMortgage, loan, interest, and investment calculators to plan your money with confidence.15 calculators
- Health & Fitness CalculatorsBMI, calorie, body fat, and other calculators to track your health and fitness goals.10 calculators
- Other CalculatorsAge, date, time, and other everyday calculators that don't fit the main categories.3 calculators
Popular calculators
- Mortgage CalculatorEstimate your full monthly mortgage payment — principal, interest, property tax, home insurance, PMI, HOA, and other costs — plus total interest, total cost, and the amortization schedule.
- Loan CalculatorCalculate loan payments three ways: an amortized loan's periodic payment and total interest, a deferred loan's lump sum due at maturity, or a bond's present value — with adjustable compounding.
- Compound Interest CalculatorSee how an investment grows with compound interest. Enter the starting amount, annual rate, term, and compounding frequency to get the ending balance, total interest, and effective annual rate (APY).
- Interest CalculatorCalculate compound interest on an initial investment plus regular contributions. See the ending balance, total interest, the interest split, and an inflation-adjusted buying power.
- Payment CalculatorFind a fixed-rate loan's monthly payment from its term, or how long it takes to pay off at a fixed monthly payment — with total interest and a full amortization schedule.
- Retirement CalculatorPlan retirement four ways: how much you need saved, the monthly savings to reach it, the sustainable withdrawal your savings support, and how long a pot of money will last.