Calculation Machine logoCalculation Machine
Finance

Credit Card Payoff Calculator

Months to clear a card balance and the interest it costs.

Enter your values

Enter the card balance in $.

Enter the apr in %.

Enter the monthly payment in $.

Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.

Results
Time to pay off
2 yr 6 mo
Total interest
$2,500.00
Total paid
$9,000.00
First month's interest
$135.36

Quick answer

At a fixed monthly payment, a card balance clears in months = −log(1 − rB/P) / log(1+r), where r is the monthly rate.

At a glance

What it doesMonths to clear a card balance and the interest it costs.
CategoryFinance
Inputs neededCard balance, APR, Monthly payment
Main outputTime to pay off
CostFree — no sign-up, no download

How to use the Credit Card Payoff Calculator

  1. 1Enter the balance and the card's APR.
  2. 2Enter what you can pay each month.
  3. 3Read the payoff time and interest cost.

Inputs explained

Card balance($)
Enter the card balance in $.
APR(%)
Enter the apr in %.
Monthly payment($)
Enter the monthly payment in $.

Worked example

Using the values the calculator loads with:

Inputs

  • Card balance6500 $
  • APR24.99 %
  • Monthly payment300 $

Results

  • Time to pay off2 yr 6 mo
  • Total interest$2,500.00
  • Total paid$9,000.00
  • First month's interest$135.36

Frequently asked questions

Why are minimum payments so damaging?

Minimums are set near the interest charge, so the balance barely moves and a card can take decades to clear.

Avalanche or snowball?

Avalanche (highest rate first) costs least; snowball (smallest balance first) is easier to stick with. Both beat paying minimums.

What do I need to enter into the Credit Card Payoff Calculator?

Just 3 values: card balance, apr, monthly payment. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.

How does the Credit Card Payoff Calculator work out the answer?

At a fixed monthly payment, a card balance clears in months = −log(1 − rB/P) / log(1+r), where r is the monthly rate. The working is shown step by step so you can verify the result by hand.

Is the Credit Card Payoff Calculator free, and do I need an account?

It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.

Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.