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. Share | Related Content What Can a Million Dollars Buy You? $1 million in a diversified portfolio could help finance part of your retirement. Inflation & Your Money It's important to understand how inflation is reported and how it can affect investments. Keys to Investing for Retirement There are some key concepts to understand when investing for retirement.