Compound Interest Calculator

The Power of Compound Interest

Compound interest is often called the eighth wonder of the world. When you earn interest on both your initial investment and on previously earned interest, your money grows exponentially over time. The longer your time horizon, the more dramatic the effect.

How This Calculator Works

Enter your initial investment, monthly contribution, expected annual return rate, and time period. The calculator shows your total future value broken down into your contributions versus interest earned, so you can see exactly how much compound growth adds to your wealth.

Getting Started with Investing

You don't need a large sum to start investing. Even small, consistent monthly contributions can grow into significant wealth over decades. Low-cost index funds are a popular choice for long-term investors who want broad market exposure with minimal fees.