Compound Interest Calculator Compound Interest Calculator Principal amount: Annual interest rate (%): Number of years: Number of contributions per year: Contribution amount per contribution ($): Calculate Result: Your compound interest will be displayed here. How to Use a Compound Interest Calculator Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo. The Power of Compound Interest Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.