Mortgage Calculator

Home price → monthly payment, total interest & full breakdown.

100% private — no uploads Finance ToolsFree & unlimited Read tutorial

See how it works

Watch a quick simulation of this tool in action — no file needed.

How to use Mortgage Calculator

Follow these steps — everything happens instantly in your browser.

  1. 1

    Step 1. Enter the home price you're considering.

  2. 2

    Step 2. Enter the down payment as a percentage of the price (e.g. 20 for 20%).

  3. 3

    Step 3. Enter the annual interest rate and the loan term in years.

  4. 4

    Step 4. See the monthly mortgage, loan amount, total interest and total paid, with a principal-vs-interest breakdown.

Why use this tool

Private by design

All processing happens locally in your browser. Open DevTools → Network and you'll see zero file uploads. Ever.

Instant

No upload wait, no queue, no server round-trip. Results appear the moment you drop a file.

Free & unlimited

No accounts, no watermarks, no daily caps. Use it as many times as you like, forever.

Works everywhere

Desktop, tablet or phone — every tool is responsive and installable as a PWA for offline use.

Frequently asked questions

Everything you might want to know about mortgage calculator.

Want to learn more?

Read our complete Mortgage Calculator tutorial with tips, use cases, and FAQs.