Compound Interest Calculator
Result
Principal
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Interest Earned
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Total Amount
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Effective Rate
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What is Compound Interest?
Compound interest is interest calculated on the initial principal AND the accumulated interest from previous periods. Formula: A = P(1 + r/n)^(nt), where P is principal, r is annual rate, n is compounding frequency, t is time in years.
Power of Compounding
More frequent compounding results in higher returns. Monthly compounding yields more than quarterly, which yields more than annual compounding for the same rate and time period.