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? Address Thank you! Oops! Related Contents The Power of Compound Interest Learn how to harness the power of compound interest for your investments. Making Sense of U.S. Household Net Worth A look inside the U.S. government's statistics on household net worth. Your Cash Flow Statement A presentation about managing money: using it, saving it, and even getting credit.