Saving for Retirement This calculator can help you estimate how much you may need to save for retirement. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Share | Related Content 18 Years Worth of Days The average retirement lasts for 18 years. Are you prepared to fill that many days? Social Security: The $64,000 Question One of the most common questions people ask about Social Security is when they should start taking benefits. Retirement Plan Distributions There are a number of ways to withdraw money from a qualified retirement plan.