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 Historical Inflation This calculator shows how inflation over the years has impacted purchasing power. What Is My Current Cash Flow? Assess whether you are running “in the black” or “in the red” each month. What Can You Buy With 529 Distributions? This article can be a helpful guide when begin preparing for education expenses.