Mortgage Calculator: The Complete Guide
See your estimated monthly mortgage payment in seconds. Enter the home price, your down payment, the interest rate, and the loan term to get the monthly principal-and-interest figure plus the total interest over the life of the mortgage.
Who the Mortgage Calculator is for
Home buyers comparing properties, deciding on a down payment, or checking affordability before applying for a mortgage.
How to use the Mortgage Calculator
- Type your values into the fields above — pick your currency or units where the calculator offers them.
- Results update automatically as you type; there's no submit button and nothing is sent to a server.
- Adjust any input to compare scenarios, then copy the result with a single click.
How it works
The loan amount is the home price minus your down payment. The monthly principal & interest payment is then P × r ÷ (1 − (1 + r)^−n), where r is the monthly rate and n is the number of months (years × 12).
Features
- Monthly principal & interest
- Down-payment percentage
- Total interest over term
- Any currency
What this mortgage calculator covers
This calculator estimates the principal-and-interest portion of a mortgage — the core of your monthly payment. Property tax, homeowner's insurance, HOA dues, and PMI are billed separately and vary by location, so they're not included here. Add them to the figure shown to estimate your full monthly housing cost.