Understand Your Credit Card.
Take Control of Your Debt.
Use free calculators to estimate interest, compare payment strategies, evaluate balance transfers, and understand how long credit card debt may take to repay.
- Free
- No sign-up
- Nothing stored
- Educational estimates
Trusted educational estimates. Nothing you enter is stored or transmitted.
Choose a calculator
All calculations run locally in your browser.
Credit Card Payoff Calculator
See how long it will take to pay off your balance and how much interest you’ll pay along the way.
Minimum Payment Calculator
Estimate how long a minimum-payment schedule really takes — and what a small extra payment can save.
Credit Card Interest Calculator
Understand daily, monthly, and annual interest on a revolving balance.
Balance Transfer Calculator
Compare a balance transfer offer against your current card and see the true savings after fees.
Credit Utilization Calculator
Calculate your overall and per-card utilization, see available credit, and explore lower-utilization scenarios.
The basics, in plain English
A quick tour of what actually drives your credit card balance.
How APR affects your balance
APR is your card’s annual interest rate. Divide it by 12 to get the monthly rate applied to what you owe. Even a small APR difference adds up fast when a balance carries for months.
Why minimum payments last so long
Minimum payments are designed to cover interest and a sliver of principal. On a card at 22% APR, paying only the minimum can stretch payoff to 15+ years and multiply the interest you pay.
What an extra $25 or $50 does
Every extra dollar goes straight to principal, which cuts future interest. Small extra payments compound into major savings — our payoff calculator shows the exact difference.
The real cost of balance transfer fees
A 0% intro APR sounds free, but a 3–5% transfer fee is added to your balance up front. Whether it saves money depends on how much you pay each month during the intro period.
Educational estimates only. CreditCardTM provides educational estimates only and does not provide financial, legal, tax, lending, or credit advice. Actual issuer calculations and terms may differ. Nothing you enter is stored or transmitted.