Compound Interest Calculator
Calculate how your money can grow over time with compound interest and regular contributions.
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Compound Interest Formula
Compound interest calculates interest on both your original investment and previously earned interest.
A = P(1 + r/n)ⁿᵗ
P = Initial investment
r = Annual interest rate
n = Compounding frequency
t = Time in years
A = Final amount
How Compound Interest Works
Compound interest allows your earnings to generate additional earnings over time. The longer you keep your money invested, the greater the potential effect of compounding.
For example, if you invest $1,000 and earn interest, future interest can be calculated on the original $1,000 plus the interest already earned.
Regular contributions can increase the final value because additional money is added throughout the investment period.
Important Information
This calculator provides estimates for educational and informational purposes only. Actual investment returns may differ because of taxes, fees, changing interest rates, inflation, investment performance, and other factors. This calculator is not financial advice.