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Free Mortgage Calculator – Monthly Home Loan Payment

Mortgage Calculator computes your monthly home loan payment, total interest, and total cost online for free. Plan your mortgage instantly in your browser.

Monthly PaymentTotal InterestTotal CostInstantFree

Monthly Payment

2,325.90

Principal

300,000.00

Total Interest

258,215.23

Total Cost

558,215.23

Principal and interest only. Taxes, insurance and fees are extra.

100% Private

All calculations run locally in your browser. Nothing is uploaded.

How to Use Mortgage Calculator

1

Enter Loan Amount

Type the total amount you plan to borrow.

2

Set Rate & Term

Enter the annual interest rate and loan term in years.

3

View Payment

See your monthly payment, total interest, and total cost.

Calculate Your Monthly Mortgage Payment and Total Cost

The Helperzy Mortgage Calculator works out the monthly payment on a home loan from the loan amount, the annual interest rate, and the loan term in years. It also shows the total interest you will pay over the life of the loan and the total amount repaid, so you see the full cost of borrowing rather than just the monthly figure. It uses the standard amortizing-loan formula, where each fixed monthly payment covers the interest due that month plus a portion of the principal. Early payments are mostly interest and later ones mostly principal, which is why a small change in the interest rate or term can move the total interest dramatically. The calculator captures this so you can compare scenarios realistically. Home buyers use it to check what a given loan will cost each month, to see how a shorter term raises the payment but slashes total interest, and to compare offers with different rates. It is equally useful for refinancing decisions and for setting a realistic budget before house-hunting. Keep in mind the result covers principal and interest only; property tax, home insurance, and any association fees are extra and vary by location. Treat the figure as a strong estimate for planning, and confirm exact terms with your lender. The calculator runs entirely in your browser and never stores your numbers.

Frequently Asked Questions – Mortgage Calculator

Enter the loan amount, annual interest rate, and loan term in years into the Helperzy Mortgage Calculator. It applies the standard amortization formula and instantly shows your monthly payment, total interest, and total amount repaid.