My Retirement Savings Estimate how long your retirement savings may last using various monthly cash flow rates. 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 FIRE Retirement This short, informative article teaches the basics of the FIRE movement. When Do You Need a Will? When do you need a will? The answer is easy: Right Now. Investing with Your Heart For some, the social impact of investing is just as important as the return, perhaps more important.