How do I calculate mortgage monthly payments?

Monthly mortgage payments are calculated using the principal, monthly interest rate, and number of payments. This calculator uses the standard amortization formula to calculate fixed periodic payments.

What is APR vs interest rate?

The interest rate is the nominal yearly rate charged on the loan. APR (Annual Percentage Rate) includes fees and other costs expressed as an annualized rate. Use APR for comparing loan offers.

How much mortgage can I afford?

Affordability depends on your income, debts, down payment and lender rules. A common rule-of-thumb is housing costs not exceeding ~28% of gross income, but check with your lender for exact ratios.

Can I see an amortization schedule?

Yes. After you calculate payments, this tool shows a short amortization preview (first 12 rows) and you can export a full schedule as CSV or print/save as PDF from the browser.

Free Mortgage Calculator — Monthly Payment, Total Interest & Amortization

Mortgage Monthly Payment Calculator

Property price (optional)

Down payment (%)

Down payment (amount)

Loan amount (principal)

If you set Property price + Down payment %, Loan amount is auto-calculated. Or enter loan amount directly to override.

Annual interest rate (%)

Term (years)

Payments per year

Choose biweekly (26) or weekly (52) if your lender supports those schedules. The calculator uses exact periodic formulas.

Optional note

All calculations are done locally in your browser. Results are estimates — consult your lender for exact numbers and fees.

Payment (periodic)

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Total payments

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Total interest

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Number of payments

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Loan-to-value (LTV)

—

Amortization preview (first 12 payments)

#	Payment	Principal	Interest	Balance

Preview shows first 12 rows. Export CSV for full schedule or Print to save PDF.

How to Use

Enter property/loan details

Fill property price and down payment % (LTV) to auto-calc loan amount, or enter loan amount directly.

Choose frequency

Select monthly (12), biweekly (26) or weekly (52) payments.

Calculate & export

Click Calculate to view payment, interest and an amortization preview. Export CSV or print/save as PDF.

Why Use This Mortgage Calculator?

Quick affordability checks: Estimate payments to compare properties and budgets.
See interest vs principal: Understand how payments reduce principal over time.
Export & print: Export full amortization to CSV or print a summary / save as PDF from your browser.
Privacy-first: All calculations run in your browser — no data stored or uploaded.

Frequently Asked Questions (FAQs)

Use loan amount, annual interest rate and number of payments. This tool uses the standard amortization formula to compute fixed periodic payments.

Amortization is the schedule showing how each payment is split between interest and principal, and how the loan balance decreases over time.

Use APR to compare loan offers because it includes fees; use the nominal interest rate to calculate payment amounts unless you add the fees to the loan principal.

Yes — after calculation click Export CSV to download the full amortization schedule for the entire loan term.

These are estimates based on standard formulas. Real loan offers may have compounding differences, rounded payments, fees or taxes — consult your lender for exact figures.