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Finance calculator

Mortgage Calculator

Estimate a mortgage payment and see how loan amount, interest rate and term affect the cost of financing a home.

Calculator Your inputs stay in the tool you embed here.
$
%
years
Monthly payment
$0
Total of all payments$0
Total interest paid$0

Everything here runs locally in your browser. Nothing you type is sent anywhere.

How this calculator works

Enter the mortgage principal, annual interest rate and repayment term. The calculator estimates the principal-and-interest payment using an amortisation formula.

Formula Payment = P × r × (1 + r)^n ÷ ((1 + r)^n − 1)

When to use it

Compare a 15-year and 30-year mortgage to see the trade-off between monthly payment and lifetime interest.

Important

This calculator is for estimation and planning. Actual financial outcomes can differ because of taxes, fees, timing, market conditions, lender terms and other factors.