CalculatorFinance

Debt Payoff Calculator

Estimate payoff time for a debt given balance, APR and fixed monthly payment.

Instant · no account

Input

Enter your values

Debt balance

Annual interest rate%

Monthly payment

Method

How it works

Change any input above and the result updates instantly. The formula or method used by this tool is shown below.

Months = −ln(1 − rP/payment) ÷ ln(1+r)

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Quick answers

About this tool

What does the Debt Payoff Calculator do?+

Estimate payoff time for a debt given balance, APR and fixed monthly payment.

How does this calculator calculate the result?+

It uses this method: Months = −ln(1 − rP/payment) ÷ ln(1+r)

Are my inputs saved or sent to an account?+

Core CalcForge tools require no account, and most calculations run locally in your browser. Favorites and recent-tool history, when used, stay in this browser.