Know the payment before you sign.
Free, fast calculators for the payments in your life. Clear results, no sign-up, and your numbers stay on your device.
Most popular
Auto Loan Calculator
Monthly payment, total interest, taxes, fees, and trade-in, with a full payment schedule.
Car calculators
Auto Refinance Calculator
See whether a lower rate actually saves you money, and when the fees pay for themselves.
Car Affordability Calculator
Work backward from a monthly budget to the most car you can buy.
Lease vs. Buy Calculator
Compare the true cost of leasing and financing the same car.
Home calculators
Mortgage Calculator
Principal, interest, property tax, insurance, PMI, and HOA in one monthly number.
Why PaymentMath
Plain-English results
Monthly payment, total interest, and the real total cost, without fine print.
Private by design
Every calculation runs in your browser. We never see or store what you type.
Fast and uncluttered
Pages load instantly and keep ads out of the way of the calculator.