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. Forecast This short video helps explain why markets can be as unpredictable as the weather. Retiring the 4% Rule A portfolio created with your long-term objectives in mind is crucial as you pursue your dream retirement.