Use the Simple Retirement Calculator to find out how long your retirement income will last. The Game allows you to input your retirement income goal, age, current monthly savings, current retirement capital and investment/inflation assumptions to determine how long your income will last. If you don't like the answer, you can change the assumptions and see what happens. Change the earnings rate on investment, add more to savings, start your retirement income later or earlier. You control the Game factors. Check out the results immediately.