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 | Related Content The Cost of Procrastination Procrastination can be costly. When you get a late start, it may be difficult to make up for lost time. 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.