Loan Calculator

Calculate your monthly payment, total interest and total repayment from the amount, rate and term.

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Calculate your loan payments

The Loan Calculator works out your monthly payment, the total interest you'll pay, and the total amount repaid — from just the loan amount, interest rate, and term. Enter your numbers and the results update instantly. It's perfect for comparing loan offers, budgeting, and understanding the true cost of borrowing.

How loan payments work

Most loans use amortization: you pay a fixed amount each month that covers both interest and a portion of the principal. Early on, more of each payment goes to interest; over time, more goes to the principal. The calculator uses the standard amortization formula to find the exact monthly payment that pays off the loan over the term.

What affects your payment

FactorEffect on monthly payment
Higher loan amountHigher payment
Higher interest rateHigher payment & more total interest
Longer termLower payment, but more total interest

How to use it

  1. Enter the loan amount.
  2. Enter the annual interest rate (APR).
  3. Enter the term in years.
  4. Read your monthly payment, total interest, and total repaid.

The longer-term trap

A longer term lowers your monthly payment, which can be tempting — but it usually means paying much more interest overall. For example, stretching a loan from 3 to 6 years roughly halves the payment but can more than double the interest. Use the "total interest" figure to see the real cost, and choose the shortest term you can comfortably afford.

Tips for borrowing smart

  • Compare offers by APR, not just the monthly payment.
  • Even a small rate difference adds up over the full term.
  • Paying a little extra each month can save significant interest.
  • Check for any fees that aren't included in the rate.

Private and free

All calculations run in your browser — nothing is uploaded. The tool is completely free with no sign-up. It's for estimation; confirm exact figures with your lender.

Frequently asked questions

How is the monthly payment calculated?

It uses the standard amortization formula based on the loan amount, monthly interest rate, and number of months.

Does a longer term cost more?

Usually yes. It lowers the monthly payment but increases the total interest paid over the life of the loan.

What is APR?

The annual percentage rate — the yearly interest rate. The calculator converts it to a monthly rate internally.

Is it free?

Yes, completely free with no sign-up, running entirely in your browser.