Mortgage Calculator

See what a house at a given price actually costs each month — and how much you'll pay in interest over 15 vs 30 years.

HomeCalculators

What it does

The Mortgage Calculator answers the two questions that decide a house purchase: can I afford the monthly payment, and how much will this house actually cost me by the time it's paid off? Enter the price, the down payment, the rate you've been quoted and the term, and it returns the principal-and-interest monthly payment, the total repaid and the total interest across the life of the loan.

How to use it

  1. Enter the total home price you're considering.
  2. Enter your down payment amount or percentage.
  3. Set the annual interest rate from your lender quote.
  4. Choose the loan term — typically 15 or 30 years.
  5. View your monthly payment, total amount paid over the life of the loan, and total interest charges.

Key features

Why it helps

The clearest use is running the same house at 15 vs 30 years, or two rate quotes side by side — the monthly gap can look small while the lifetime interest gap runs into six figures. It shows principal and interest only; on a real closing statement you'll also see property tax, buildings insurance and, if the down payment is small, mortgage insurance, so budget on top of the number here rather than treating it as the full monthly cost.

Frequently asked questions

What is a mortgage?

A loan for purchasing real estate, repaid in monthly installments over 15-30 years.

What's in the monthly payment?

This shows principal and interest. Actual payments may also include taxes, insurance, and PMI.

How does the down payment affect my loan?

Larger down payment = lower loan amount = lower monthly payments and less total interest.

15 or 30 year term?

15-year: higher payments, much less total interest. 30-year: lower payments, costs more overall.

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