Meet the Mortgage Calculator
Estimate your monthly mortgage payment from the home price, down payment, interest rate and loan term. The calculator uses the standard fixed-rate amortization formula lenders use, so you
- Free to use
- No signup
- Nothing to install
- Works in any modern browser
Illustration. Open the tool for the real thing.
What is the Mortgage Calculator?
Estimate your monthly mortgage payment from the home price, down payment, interest rate and loan term. The calculator uses the standard fixed-rate amortization formula lenders use, so you get a realistic monthly principal-and-interest figure before you talk to a lender.
Use it to compare how a bigger down payment, a shorter term, or a different rate changes your monthly payment and the total interest you'll pay over the life of the mortgage.
3 steps to your result
Open the tool and follow along. Nothing to install.
What you get
Principal and interest calculated instantly from your inputs.
See how a larger down payment lowers your loan amount and monthly cost.
Understand the real long-term cost of the mortgage, not just the monthly figure.
Test 15-year versus 30-year terms side by side by changing one field.
AZRS tools are free to open and use.
It opens in your browser, so there is nothing to download.
Used for
Pick one to see how it fits.
First-time home buyers
Get a realistic monthly payment estimate before house hunting or getting pre-approved.
Try it freeAnyone budgeting for a home
See how down payment size changes affordability before committing.
Try it freeHow it compares
A plain look at this tool next to the usual alternative.
| This calculator | Desktop software | |
|---|---|---|
| Install | Nothing to install | Usually an app or program to install |
| Account | No signup | Depends on the product |
| Cost | Free to use | Free or paid, depends on the product |
Questions people ask
What does this mortgage calculator include?
Principal and interest based on your home price, down payment, rate and term. It does not include property tax, insurance, PMI or HOA fees.
How much should my down payment be?
20% is a common target to avoid PMI, but many loans allow less — the calculator lets you test any amount.
Is a 15-year or 30-year mortgage better?
A 15-year term usually has a higher monthly payment but much lower total interest; a 30-year term is more affordable monthly but costs more overall. Try both here.
Is this mortgage calculator free?
Yes, free with no signup.
Is this an official loan quote?
No, it is an estimate. Your actual rate and payment depend on your lender, credit and loan program.
More free tools
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Try the Mortgage Calculator now
Estimate your monthly mortgage payment from the home price, down payment, interest rate. Free to use.
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