Credit Card Calculator
Calculate your credit card payments, interest, and payoff time. Enter your balance, APR, and monthly payment to see how long it will take to pay off your debt and total interest paid.
Published by:
isCalculator Editorial Team
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How to use this tool?
How to Use the Credit Card Calculator
Quickly estimate how long it will take to pay off your credit card balance and how much interest you'll pay.
- Enter your Current Balance — the total amount you owe (e.g., $5,000).
- Enter your APR — the annual interest rate as a percentage (e.g., 18 for 18%).
- Enter your Monthly Payment — how much you plan to pay each month (e.g., $200).
- Click Calculate or press Enter on any input field.
What you'll see:
- Months to Pay Off — total number of monthly payments needed.
- Total Interest Paid — the extra cost beyond your balance.
- Total Paid — balance plus interest.
Previous Results
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Frequently Asked Questions
We use the formula for the number of periods (n) = log((P - r*B)/P) / log(1+r), where P is monthly payment, r is monthly interest rate (APR/12/100), and B is balance. The result is rounded up to the nearest month.
If your payment is less than or equal to the interest charged in the first month (balance * monthly rate), you will never pay off the debt. The calculator will warn you to increase your payment.
This calculator assumes a fixed APR and fixed monthly payment. Actual credit card interest may compound daily, but this monthly approximation is commonly used for planning.
