Debt Payoff Calculator

Find how long it takes to clear a debt and how much interest you save by paying extra each month.

Debt balance

Interest rate (% a year)

Credit cards often charge 36–42% a year.

Monthly payment

Extra payment each month

How to use debt payoff calculator

1Enter your valuesFill in the fields — example values are already there to start from.

2Adjust the optionsChange the choices to match your situation. Results update as you type.

3Use the resultRead it, or copy it with the Copy button.

If it doesn't cover the monthly interest, the debt never shrinks; the tool warns you.

It cuts the principal faster, reducing the interest charged each month.

No. Everything is worked out in your browser and nothing you type is sent to a server.