Doubling Your Money This calculator demonstrates the power of compound interest. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Share | Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content What Our Kids Can Teach us About Saving Money Would you guess that Millennials are effectively saving for retirement? Well, they are. How to Read Your Credit Report Solve a mystery while learning how important your credit report is with this story-driven interactive. Historical Inflation This calculator shows how inflation over the years has impacted purchasing power.