Loan Repayment Calculator
A free, browser-based calculator. Runs entirely in your browser — no sign up, nothing stored.
100% FreeRuns in your browserBasic
Enter Values
Enter your values and press Calculate to see results.
How to use this calculator
- Enter the loan amount, the annual interest rate and the term in years.
- Press Calculate for the monthly repayment and total interest.
How it works
The repayment uses the standard amortised loan formula: M = P·i ÷ (1 − (1 + i)^−n), where i is the monthly rate (annual ÷ 12) and n is the number of months.
Each repayment covers the interest first, with the rest reducing the balance.
Worked example
$100,000 at 5% over 30 years. That works out to about $536.82 a month.
Frequently asked questions
Is this principal and interest?
Yes — it assumes a principal-and-interest loan at a fixed rate.
Does it include fees?
No — add any establishment or ongoing fees separately.
Related tools
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.