Mortgage Calculator

Calculate monthly mortgage payments, total interest, and the true cost of a home with adjustable down payment, rate, and term.

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About Mortgage Calculator

The mortgage calculator estimates your monthly payment from loan amount, interest rate, and term, breaking it into principal and interest.

Knowing your real monthly payment before you commit to a home loan reveals how much house you can actually afford. This tool includes property tax and insurance fields for a complete picture of the true monthly cost.

When to Use Mortgage Calculator

Use it to compare mortgage offers, to size how large a loan your budget supports, or to see the impact of a higher down payment.

Pro Tip

The largest lever on total cost is the interest rate — a 0.5% difference on a 30-year loan is often tens of thousands of dollars.

Key Features

  • Processes Home Price, Down Payment (%), Interest Rate, Loan Term (Years) directly in your browser

  • Produces monthly payment, total interest instantly

  • Completely free with no usage limits

  • No registration or account required

How to Use

  1. Provide the required inputs (Home Price, Down Payment (%), Interest Rate, Loan Term (Years)).

  2. The tool processes everything locally in your browser and instantly produces the following results: Monthly Payment, Total Interest.

  3. Review the result, then copy it to your clipboard or download the output file directly from this page.

Privacy note: Mortgage Calculator runs 100% in your browser. Your data is never uploaded to any server, so nothing is stored or shared.

Benefits

  • Your data never leaves your device when using Mortgage Calculator - everything runs locally

  • Get accurate results in seconds

  • Works on desktop, tablet, and mobile

  • No software download or installation needed

Frequently Asked Questions