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 Capital Gains Tax Estimator Use this calculator to estimate your capital gains tax. Should You Tap Retirement Savings to Fund College? There are three things to consider before dipping into retirement savings to pay for college. Acres of Diamonds In life it often happens that the answers to our most pressing questions are right in our own backyards.