Find out how long a credit card balance takes to clear, or what monthly payment clears it by a target date, plus the interest cost.
Credit cards charge interest monthly on the remaining balance. If your payment is close to the monthly interest, almost none of it reduces the principal. Paying well above the interest is what clears the debt.
Increase the monthly payment, even slightly, and watch the months and total interest drop. Switch to the 'payment for a target months' mode to see exactly what it takes to be done by a chosen date.
No. The APR is the yearly rate; the calculator divides it by 12 for the monthly rate it applies to your balance. Most cards compound interest monthly like this.