Mortgage calculators
Nine tools covering every step of the home-financing decision, from "can I afford it?" to "should I refinance?"
Buying or refinancing a home is a sequence of decisions, not a single number. The right calculator depends on where you are in the process.
Before you shop, the affordability and down-payment calculators tell you what price range fits your income, debts, and savings.
When you're comparing offers, the main mortgage calculator computes monthly payment, total interest, and the full amortization schedule. If you're putting less than 20% down, the FHA loan calculator factors in MIP, and the VA loan calculator handles the funding fee for eligible service members.
After you close, the payoff calculator shows how extra principal payments save interest and shorten the loan, and the refinance calculator computes the break-even point on a rate change.
To tap home equity, the home equity loan and HELOC calculators model the two main ways to borrow against the value you've built up.
All nine use the same standard amortization math, the same formulas your lender uses internally. Results match within rounding.
See also: our 2026 study on the monthly mortgage payment for a $400K home in every US state — same loan, 50 states, PITI varies by more than $650/month (about $7,800/year) just from crossing state lines.
Before you shop
Figure out what you can afford and how much you need to put down.
- Mortgage Affordability Calculator Free mortgage affordability calculator. Max purchase price from income, debts, down payment, rate, and DTI ratio. See your affordable price ceiling.
- Down Payment Calculator Free down payment calculator. Enter price, target down payment %, monthly savings, and APR to see months to goal and interest earned along the way.
Comparing loan offers
Compute payments, total interest, and amortization for any loan structure.
- Mortgage Calculator Free mortgage calculator. Monthly payment, total interest, and full amortization schedule. See how extra payments save years and thousands in interest.
- FHA Loan Calculator Free FHA loan calculator with MIP. Monthly payments including the 1.75% upfront and 0.55% annual mortgage premiums that change the true cost of FHA.
- VA Loan Calculator Free VA loan calculator with funding fee. Monthly payments, first-use vs subsequent-use rates, total cost. No PMI required for service-connected vets.
After you close
Decide on extra payments or refinancing once you have a loan.
- Mortgage Payoff Calculator Free mortgage payoff calculator. See how extra monthly payments cut years off your loan and save thousands in interest, with vs. without extras.
- Mortgage Refinance Calculator Free refinance calculator. Compare your current mortgage to a new offer. See monthly savings, lifetime savings net of closing costs, break-even month.
Tapping home equity
Borrow against the value you've built up, lump-sum or line of credit.
- Home Equity Loan Calculator Free home equity loan calculator. Monthly payment and total interest on a fixed-rate second mortgage. Lump-sum compared to a variable-rate HELOC.
- HELOC Calculator Free HELOC calculator. Interest-only draw payments and the higher repayment-phase payment. See the payment shock when your HELOC enters amortization.