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. Share | Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content Retirement Redefined Around the country, attitudes about retirement are shifting. Starting a Roth IRA for a Teen This early financial decision could prove helpful over time. A Look at Systematic Withdrawals This calculator may help you estimate how long funds may last given regular withdrawals.