Compound Interest Calculator 📈

Calculate how much your investments will grow over time with compound interest.

Initial Investment ($)
Monthly Contribution ($)
Estimated Interest Rate (%)
Years to Grow

The Power of Compound Interest

Albert Einstein reportedly called compound interest the "eighth wonder of the world." Our Investment & Compound Interest Calculator shows you exactly how your money can grow over time when you reinvest your earnings.

How to use this tool:

  • Initial Investment: The amount of money you are starting with.
  • Monthly Contribution: How much extra you plan to invest every single month.
  • Interest Rate: Your expected annual return (the S&P 500 historically averages around 7-10% annually).
  • Years: How long you will let the money grow.