iLoanCalculator.com

This calculator lets you explore four basic strategies to help you enhance the growth of your 401k. Each strategy on its own can make a significant impact, but combining all four has even a greater impact: (1) Increase your annual contribution: you should contribute as much as possible in each of your working years; (2) Start contributing early in life: contributing early in you career, even if you start with smaller contributions, is a great way to grow your 401k; (3) Contribute longer by retiring later: retiring later, even by a few years, can add extra growth to your 401k; (4) Earn a higher rate of return: earning a higher return, even by 1% can make a dramatic difference over the long term.