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. Starting a Roth IRA for a Teen This early financial decision could prove helpful over time. SECURE Act 2.0: An Overview The second iteration of the SECURE Act brings forward several changes to the world of retirement.