This comprehensive online Retirement Fund Calculator will calculate how much you need to be saving each month in order to fully fund your retirement plan.
The calculator includes options for factoring in inflation, taxes, up to three post-retirement incomes, and up to 4 one-time contributions (sale of home, etc.).
You can also print out printer-friendly retirement planning reports for any number of what-if scenarios.
If you would prefer a simpler calculator that does not attempt to account for inflation and taxes, please use the Retirement Saving Calculator.
Or, if you prefer to use a calculator that does account for inflation, but is less comprehensive than the one on this page, you may want to refer to the Retirement Income Calculator.