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 Question Thank you! Oops! Related Content Personal Finance Calendar Use this handy calendar to remember the year’s most important financial dates. Saving for Retirement This calculator can help you estimate how much you may need to save for retirement. When Do You Need a Will? When do you need a will? The answer is easy: Right Now.