Paying Off a Credit Card Enter various payment options and determine how long it may take to pay off a credit card. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content My Retirement Savings Estimate how long your retirement savings may last using various monthly cash flow rates. The Rule of 72 Do you know how long it may take for your investments to double in value? The Rule of 72 is a quick way to figure it out. How to Effectively Budget as a Couple Be sure that you agree on how to go about combining your finances as a couple before discussing how you'll handle expenses.