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 Question Thank you! Oops! Related Content How Big is Money? Learn a little about worldwide currency in this fun infographic Comparing Investments This calculator compares the net gain of a taxable investment versus a tax-favored one. Bull and Bear Go To Market Learn about the difference between bulls and bears—markets, that is!