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 What Our Kids Can Teach us About Saving Money Would you guess that Millennials are effectively saving for retirement? Well, they are. What to Look for in Personal Finance Apps An increasing number have been developed to help individuals with their personal finances. Your Cash Flow Statement A presentation about managing money: using it, saving it, and even getting credit.