The Retirement Calculator is a first-of-its-kind software tool that provides a detailed mechanism for determining the optimal age for Retirement, and also for evaluating how long your retirement funds will last. The vast majority of Americans today no longer have defined pension plans at their place of employment, as most of these types of plans have been supplanted by 401K, 403B, 457, IRA, and SEP plans. As such, it has become increasingly difficult for people to gauge how much money they will need for retirement, and to determine how long these types of contributory account plans will last. This is where the Retirement Calculator comes into play. The Retirement Calculator is a comprehensive software platform that looks at many factors in determining an optimal retirement age.