All Finance

Mortgage Calculator

See your monthly payment, total interest, and the payoff effect of paying extra.

mortgage-calculator.local
$
$
% APR
$
Monthly payment (principal + interest)
$2,271/mo
Loan amount
$400k
Total interest
$418k
Total of payments
$818k
Payoff time
30 yr
Balance over timestandard

How to use it

  1. Enter the home price, your down payment, and the interest rate.
  2. Pick a loan term and add any extra monthly payment.
  3. Read the monthly payment, totals, and the payoff effect.

About this tool

The mortgage calculator works out the monthly principal and interest payment using the standard amortizing formula, then shows total interest, total paid, and payoff time. Adding an extra monthly payment shows how many months and how much interest you save. It does not include property tax, insurance, or HOA fees, so your real monthly cost will be higher than the principal and interest figure shown here.

Examples

Input$400,000 home, 20 percent down, 6.5 percent, 30 years
OutputAbout $2,022 per month
InputAdd $200 extra each month
OutputYears off the loan and thousands less interest

Common uses

  • Estimate a monthly mortgage payment
  • Compare 15, 25, and 30 year terms
  • See the total interest a loan will cost
  • Test how extra payments shorten a loan

FAQ

Is my financial information sent anywhere?
No. Every figure is computed locally in your browser. Nothing you enter is sent, saved, or tracked.
How is the monthly payment calculated?
It uses the standard amortizing loan formula on the loan amount, interest rate, and term, for principal and interest.
What does an extra monthly payment do?
It shortens the loan and cuts total interest. The tool shows how many months you save and how much interest you avoid.

Related tools

Embed this tool

Paste this snippet to put the tool on your own site. It runs entirely in the visitor's browser, the same as it does here.

<iframe src="https://tooldok.com/embed/mortgage-calculator/" title="Mortgage Calculator by Tooldok" width="100%" height="560" style="border:1px solid #16130d;border-radius:16px;max-width:720px" loading="lazy"></iframe> <p style="font:13px sans-serif"><a href="https://tooldok.com/tools/mortgage-calculator/" target="_blank" rel="noopener">Mortgage Calculator</a> by <a href="https://tooldok.com/" target="_blank" rel="noopener">Tooldok</a></p>