Loan & Mortgage Calculator
Calculate monthly payments, total interest, and amortisation schedule for any loan.
🏦 Fixed-rate amortisation — uses the formula M = P × [r(1+r)ⁿ] / [(1+r)ⁿ − 1], where P = principal, r = monthly interest rate, n = total payments.
📊 Amortisation schedule — early payments are mostly interest; later payments shift toward principal. The yearly table shows exactly how the balance shrinks over time.
🔒 Privacy — every calculation runs locally in your browser. No data is sent anywhere.
⚠️ Disclaimer — estimates apply to fixed-rate loans only. Adjustable rates, origination fees, mortgage insurance, property taxes, and early repayment penalties are not included. Always confirm figures with your lender.
About Loan & Mortgage Calculator
The Loan & Mortgage Calculator computes your fixed monthly payment using the standard amortisation formula, then shows a full year-by-year breakdown of how much of each payment goes to principal versus interest. Works for mortgages, car loans, student loans, and any fixed-rate instalment loan. 100% client-side — no data ever leaves your browser.