Watch Your Money Grow with Compound Interest!

Our Compound Interest Calculator shows you how your investments can grow over time with the power of compounding—where you earn interest not just on your initial investment, but also on the interest already earned.

We use the standard compound interest formula:

• Final Amount = P(1 + r/n)^(nt)
• Where P = Principal, r = Annual interest rate, n = Compounds per year, t = Time in years

For investments with regular contributions, we calculate:

• Each contribution's compound growth separately
• Total contributions made over the investment period
• Total interest earned (the difference between final balance and total contributions)

Tips: Even small increases in your interest rate can dramatically affect your final balance due to the nature of exponential growth. Similarly, starting earlier—even with less money—often outperforms starting later with larger amounts.