Free Mortgage Calculators
Easy, accurate tools to help you plan your home purchase or refinance — no sign-up required.
Mortgage Calculator
Calculate your monthly payment from loan amount, interest rate, and term — with full PITI breakdown.
Calculate now →Amortization Calculator
See a full payment-by-payment schedule — exactly how much goes to principal vs. interest each month.
View schedule →Affordability Calculator
Find out how much house you can afford based on your income and debts using the 28/36 DTI rule.
Check affordability →Refinance Calculator
Compare your current loan to a new rate — see monthly savings, break-even point, and lifetime interest saved.
Compare rates →Advertisement
Why Use a Mortgage Calculator?
Understanding your mortgage before you commit is one of the most important steps in the home-buying process. A small difference in interest rate or loan term can mean tens of thousands of dollars over the life of your loan.
Our free calculators give you instant, accurate estimates for monthly payments, total interest paid, affordability limits, and refinance savings — with no registration required.
How Mortgage Payments Work
Your monthly mortgage payment is made up of principal (paying down your loan balance) and interest (the cost of borrowing). Most loans also require escrow for property taxes and homeowners insurance, making up your full PITI payment.
The most common mortgage terms are 30-year fixed and 15-year fixed. A 30-year loan has lower monthly payments; a 15-year loan saves significantly on total interest.
What These Calculators Include
- Monthly Payment Calculator — principal & interest plus estimated taxes and insurance
- Amortization Table — month-by-month or year-by-year schedule for any loan
- Affordability Calculator — based on the 28/36 debt-to-income rule
- Refinance Calculator — monthly savings, break-even point, lifetime interest savings