What Is My Life Expectancy? Estimate how many years you may need retirement assets or how long to provide income to a surviving spouse or children. 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 Why You Should Invest in Your 401(k) Did you know that your savings can compound over time? Should You Tap Retirement Savings to Fund College? There are three things to consider before dipping into retirement savings to pay for college. Important Birthdays Over 50 Here's a look at several birthdays and “half-birthdays” that have implications regarding your retirement income.