To show the power of investing money over time, please see these great online caluclators.

• See how contributions to your 401(k) plan can add up over time with the Kiplinger 401(k) Calculator.
  
  
• Learn about The Power of Boosting 401(k) Contributions with additional contributions.
  
  
• The Heritage Foundation Social Security Calculator enables you to calculate what an American worker of your same age and gender can expect to receive from Social Security.
  
  
• The Retirement Planner from CNNmoney helps you estimate how well your savings program is preparing you for retirement.