Loan calculator
Monthly payment, total repaid and total interest.
Monthly payment
2 539.34
over 60 payments
- Total repaid
- 152 360.56
- Total interest
- 52 360.56
34% of everything you repay is interest.
Enter the amount, the annual interest rate and the term. You get the monthly payment and — more usefully — the total you will repay and how much of that is interest rather than principal.
How to use it
- Enter the loan amount.
- Enter the annual interest rate and the term in years.
- Read the monthly payment and the total interest.
Why use this tool
Completely private
Everything runs inside your browser. Your files and text are never sent to a server.
Free, with no limits
No sign-up, no watermarks and no cap on how many times you can use it.
Instant results
There is no upload or queue to wait for, so results appear as fast as your device can work.
Works on any device
Runs in any modern browser on phone, tablet or desktop. Nothing to install.
Frequently asked questions
- Which kind of loan does this model?
- An annuity loan, where every payment is the same and the split between interest and principal shifts over time. That covers most mortgages, car loans and consumer credit. Loans with a fixed principal repayment plus interest work differently and start higher.
- Is the rate monthly or annual?
- Annual. It is divided by twelve internally. Entering a monthly rate by mistake produces a payment roughly twelve times too high, which is the usual sign something is wrong.
- Why is the total interest so large?
- Because interest is charged on the outstanding balance for the whole term. Over a long term it compounds into a large share of the total — the bar shows exactly what proportion. Shortening the term usually saves far more than a small rate reduction.
- Does it include fees and insurance?
- No. Arrangement fees, insurance and other charges are not modelled, so a lender's stated total cost will normally be higher than this figure.