Mortgage Calculator
Estimate your monthly mortgage payment based on price, down payment, rate, and term.
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About the Mortgage Calculator
Quickly estimate the monthly payment on a home loan. Enter the home price, your down payment, the annual interest rate, and the loan term in years to see your monthly principal-and-interest payment, the total interest paid over the life of the loan, and the total cost of the home. All math happens locally in your browser.
How to use the Mortgage Calculator
- 1Enter the home's purchase price.
- 2Enter your down payment amount.
- 3Type the annual interest rate of your mortgage.
- 4Choose the loan term (commonly 15 or 30 years) to see the full breakdown.
Why use our Mortgage Calculator
Real amortization math
Same formula used by lenders for fixed-rate mortgage payments.
Down payment aware
Automatically subtracts your down payment from the home price before calculating.
Instant breakdown
Monthly payment, total interest, and total cost update as you type.
Completely private
Your home price and loan details stay in your browser.
Frequently asked questions
Does this include property tax and insurance?+
No. This is a principal-and-interest (P&I) calculator. Taxes, homeowners insurance, HOA fees, and PMI vary by location and lender — add them on top of the figure shown here for your full monthly housing cost.
What interest rate should I use?+
Use the rate quoted by your lender. If you don't have a quote yet, check current average mortgage rates online for your loan type (15-year fixed, 30-year fixed, etc.) as a starting point.
How does a bigger down payment change my payment?+
A larger down payment reduces the loan amount, which lowers both your monthly payment and the total interest paid. It can also help you avoid private mortgage insurance (PMI) on conventional loans.
Is anything saved or shared?+
No. The calculator runs entirely in your browser and never sends your numbers to a server.