Plan your home purchase with confidence.

Mortgage Calculators

Estimate monthly payments, affordability, refinancing, and the true cost of homeownership.

Buying a home is the largest financial commitment most people will ever make. These calculators are built to give you straight answers — not lead-gen forms.

Lenders frame everything around the monthly principal-and-interest quote, but the true cost of homeownership includes property taxes, insurance, HOA dues, PMI, maintenance, and the interest you pay over the life of the loan. The calculators below help you see each component clearly so you walk into a conversation with a lender already knowing the math.

Start with the affordability calculator to set a realistic price ceiling, then use the payment calculator to confirm a specific deal, and the refinance and extra-payment tools to see how to save money over time.

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Mortgage Payment Calculator

Estimate your monthly mortgage payment including principal, interest, property taxes, insurance, HOA, and PMI.

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Mortgage Affordability Calculator

See the maximum home price you can responsibly afford based on income, debts, down payment, and current rates.

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Mortgage Refinance Calculator

Calculate monthly savings, break-even point, and lifetime interest if you refinance your mortgage.

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Extra Mortgage Payment Calculator

Mortgage calculator with extra payments to principal — see how much interest and time you save by adding an extra monthly principal payment.

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15 vs 30 Year Mortgage Calculator

Compare monthly payments and lifetime interest between a 15 year and 30 year mortgage at real rates.

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Down Payment Calculator

Calculate the down payment, loan amount, and loan-to-value ratio for any home price — and see how far you are from the 20% threshold that avoids PMI.

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PMI Calculator

Estimate the monthly cost of private mortgage insurance for a low-down-payment conventional loan, and when it auto-cancels.

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Mortgage Amortization Calculator

Generate a full month-by-month amortization schedule for any mortgage, with the principal/interest split and running balance for every payment.

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Closing Cost Calculator

Estimate the upfront closing costs and total cash to close on a home — lender fees, title and escrow, prepaid taxes and insurance, recording, and custom line items.

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Rent vs Buy Calculator

Compare the true long-term cost of renting versus buying over your planned time horizon — including appreciation, taxes, maintenance, and the opportunity cost of the down payment.

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Mortgage Comparison Calculator

Compare two mortgage scenarios side by side — different rates, terms, down payments, or loan amounts — to see which one actually costs less.

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HELOC Payment Calculator

Estimate HELOC payments during the interest-only draw period and the amortized repayment period.

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Mortgage Recast Calculator

See how a lump-sum payment plus a recast lowers your monthly mortgage payment without changing your rate or term.

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ARM vs Fixed Mortgage Calculator

Compare an adjustable-rate mortgage against a fixed-rate mortgage, factoring in the ARM's post-adjustment rate.

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Financial Disclaimer

This calculator is for educational and estimation purposes only. It does not provide financial, mortgage, tax, investment, or legal advice. Actual rates, payments, taxes, fees, insurance costs, eligibility, and loan terms vary by lender, location, credit profile, and market conditions. Always compare official offers and consult a qualified professional before making financial decisions.

Last updated June 2026 · Prepared by the mCalculator Editorial Team