Free Compound Interest Calculator Online — Calculate compound interest with different frequencies
Total Amount
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Interest Earned
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Effective Rate
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How to Calculate Compound Interest
Enter principal, rate, time, and compounding frequency. The calculator shows total amount, interest earned, effective annual rate, and a year-by-year growth table.
Compound Interest Formula
A = P × (1 + r/n)^(n×t), where P = Principal, r = annual rate (decimal), n = compounding frequency per year, t = time in years.
What is the power of compounding?
Compound interest earns interest on previously earned interest. The more frequently interest compounds, the faster your money grows. Monthly compounding earns more than yearly.
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