Compound Interest Calculator
Calculate compound interest and see your investment grow over time.
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How to Use Compound Interest Calculator
- 1Enter your principal amount.
- 2Set the annual interest rate.
- 3Choose the time period and compounding frequency.
- 4See total amount, interest earned, and year-by-year growth.
Frequently Asked Questions
What is compound interest?
Interest calculated on both the initial principal and the accumulated interest from previous periods — so your interest earns interest.
How does compounding frequency affect returns?
More frequent compounding yields slightly higher returns. Daily compounding produces marginally more than annual compounding at the same nominal rate.
What is effective annual rate?
The actual annual return accounting for compounding frequency. A 12% rate compounded monthly has an effective annual rate of 12.68%.
About Compound Interest Calculator
Albert Einstein reportedly called compound interest the eighth wonder of the world. Our Compound Interest Calculator makes the power of compounding tangible — enter your numbers and see how wealth accumulates over time with different frequencies and rates.