Mortgage Calculator
Estimate your monthly mortgage payment, including principal, interest, property taxes, home insurance and HOA fees.
Result
Enter your numbers to see the estimate.
How this calculator works
Your monthly mortgage payment is usually more than just principal and interest — most homeowners also pay property taxes, home insurance and sometimes HOA fees as part of their total monthly housing cost. This calculator adds all of these together to give you a realistic full picture.
The principal and interest portion uses the standard amortizing loan formula, where your monthly payment stays the same over the life of the loan, but the mix between principal and interest shifts over time — early payments are mostly interest, later payments are mostly principal.
We don't guess a current mortgage interest rate for you — rates change constantly and vary by lender, credit profile and loan type, so enter the rate from your own quote or pre-approval for an accurate result. This calculator provides estimates and does not constitute financial advice; talk to a licensed mortgage professional before making a home financing decision.
Example: A $350,000 home with a $70,000 down payment, 6.5% interest rate and a 30-year term has a principal & interest payment of about $1,770/month.
How it works
Enter your measurements or costs
Fill in the room size, materials or costs for your project. No sign-up required.
Adjust the settings
Choose your units, waste percentage and any project-specific options.
Get your estimate instantly
See your results calculated instantly, right in your browser.
Frequently asked questions
How is a mortgage payment calculated?
The principal and interest payment uses a standard amortization formula based on your loan amount, interest rate and term. Add property taxes, insurance and HOA fees on top for your total monthly payment.
Why doesn't this calculator show today's mortgage rates?
Mortgage rates change daily and vary by lender, credit score, loan type and down payment size. Enter the rate from your own lender quote or pre-approval for an accurate estimate.
What's included in a monthly mortgage payment?
Typically principal, interest, property taxes and home insurance (sometimes called PITI), plus HOA fees if applicable. This calculator includes all of these.
How does down payment affect my monthly payment?
A larger down payment reduces your loan amount, which lowers both your monthly principal & interest payment and your total interest paid over the life of the loan.
Is this mortgage calculator financial advice?
No. This calculator provides estimates for planning purposes only and does not constitute financial, mortgage, tax or legal advice. Consult a licensed mortgage professional for your specific situation.