How Compound Interest Works Use this calculator to better see the potential impact of compound interest on an asset. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content How Stocks Work Understanding how a stock works is key to understanding your investments. Should I Pay Off Debt or Invest? This calculator will help determine whether you should invest funds or pay down debt. Investing with Your Heart For some, the social impact of investing is just as important as the return, perhaps more important.