Mortgage Calculator
Calculate monthly payments, total interest, and loan breakdown.
Overview
Plan your home purchase with this mortgage calculator that computes your monthly payment, total interest cost, and generates a complete amortization schedule. Enter the loan amount, interest rate, and term length to see exactly how much you'll pay each month and over the life of the loan.
Key Features
- Monthly Payment — Calculates your exact monthly mortgage payment based on principal, rate, and term.
- Total Interest — Shows the total interest you'll pay over the full loan term for informed decision-making.
- Amortization Schedule — A month-by-month breakdown showing how each payment splits between principal and interest.
- Adjustable Parameters — Sliders and inputs for loan amount, interest rate, and term length with instant recalculation.
Tech Stack
Built with HTML, CSS, and JavaScript. Mortgage math uses the standard amortization formula. The schedule is generated iteratively with running balance calculations.
Problem it solves
Understanding the true cost of a mortgage requires complex math. This calculator breaks it down into clear monthly payments and an amortization table.
How it was built
Built with HTML, CSS, and JavaScript. Standard amortization formula, iterative schedule generation with running balance.
Frequently Asked Questions
Is the Mortgage Calculator completely free to use?
Yes, the Mortgage Calculator is 100% free with no account required, no subscription, and no watermarks.
Does Mortgage Calculator store any of my data or inputs?
No. All generation and calculations run client-side directly in your browser. None of your data or inputs are sent to or stored on external servers.
Can I use outputs from Mortgage Calculator for commercial projects?
Yes, all results generated with this tool are free to use for both personal and commercial projects without attribution.