Compound interest calculator

Enter the principal, annual rate, time and compounding frequency to get the final amount.

Result
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$1,000 at 8% compounded monthly for 5 years grows to about $1,490.

Example

Compute compound interest on a principal in your browser. Values stay on your device; no live rates.

$1,000 at 8% compounded monthly for 5 years grows to about $1,490.

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Methodology

A = P·(1 + r/n)^(n·t), where P is principal, r the annual rate, n the compounds per year and t the years.