Loan Calculator
Work out the monthly payment on any fixed-rate loan. Enter the amount, annual interest rate and term, and see the payment, the total interest you’ll pay and the total cost — all in your browser.
- 🔒 100% private — no uploads
- 🆓 Free, no watermark
- 📱 Works on any device
How to calculate
- 1
Enter the loan details
Type the loan amount, the annual interest rate (APR) and the term in years.
- 2
See the payment
The monthly payment updates instantly using standard amortization math.
- 3
Check the total cost
See how much interest you’ll pay over the life of the loan and the total paid.
Why use Loan Calculator?
Any fixed-rate loan
Personal, auto, student or home-equity — anything with a fixed rate and term.
Total interest & cost
Not just the monthly payment — see the lifetime interest and total you’ll repay.
100% private
All math runs in your browser; your numbers are never uploaded.
Any device
No install or account; works on phone or desktop.
How loan payments work
A fixed-rate loan is amortized: each monthly payment covers that month’s interest plus a slice of the principal, and the payment stays the same throughout. Early on, most of it is interest; later, most is principal. This calculator uses the standard formula to find the level payment that clears the loan exactly at the end of the term, and totals the interest along the way.
Guides & explanations
Frequently asked questions
What’s included in the monthly payment?
Principal and interest only. Things like insurance, fees or taxes aren’t included — for a home loan with taxes and insurance, use the mortgage calculator.
How can I pay less interest?
A shorter term or a lower rate both cut total interest. Paying extra toward principal also shortens the loan — try lowering the term to see the effect.
Do my numbers get uploaded anywhere?
No. Every calculation runs entirely in your browser — your income, loan amount, balances and goals never leave your device. There’s no account and nothing is sent to a server.