Mortgage Calculator
Estimate mortgage payments, see total interest, and view an amortization schedule. Add taxes & costs for a more realistic monthly total.
Mortgage Calculator – Estimate Monthly Payments & Total Interest
Use our free Mortgage Calculator to estimate your monthly house payment and long-term costs. Enter home price (or loan amount), down payment, annual interest rate, and loan term to instantly see your monthly payment, total repaid, and total interest. Perfect for planning fixed-rate mortgages.
How the mortgage calculation works
We use the standard annuity formula to compute a fixed monthly payment over the full term. Each payment is split into principal (reduces your loan balance) and interest (the cost of borrowing). You also get a full amortization schedule to see how your balance declines over time.
Key features
Instant monthly payment, total repaid, and total interest
Full amortization schedule (payment, principal, interest, remaining balance)
Works for common fixed-rate terms (e.g., 15-year, 20-year, 30-year)
Clean inputs for home price or loan amount, down payment, rate, and term
Example calculation
Example: Loan amount $350,000 at 6.5% annual rate for 30 years.
Monthly payment: $2,212.24
Total repaid: $796,405.71
Total interest: $446,405.71
This shows how interest accumulates over long terms and why comparing rates and terms can save tens of thousands of dollars.
Tips for planning your mortgage
Test different rates and terms to see their impact on your budget
Consider a larger down payment to reduce interest costs
Review your amortization schedule to understand early-year interest vs. principal
Frequently Asked Questions
- What inputs do I need for the mortgage calculator?
- Enter home price (or loan amount), down payment, annual interest rate, and term in years. The calculator returns your monthly payment, total repaid, total interest, and the amortization schedule.
- How accurate is the monthly payment?
- The principal-and-interest (P&I) payment uses the standard mortgage formula. Actual monthly costs may be higher if you add items like property taxes, homeowner’s insurance, or HOA fees.
- What term should I choose: 15 vs. 30 years?
- Shorter terms usually mean higher monthly payments but much lower total interest. Longer terms lower the monthly payment but increase total interest over time.
Calculate your mortgage payment now and compare terms or interest rates to find a payment that fits your budget. Try our Loan or Percentage Calculators next.