Compound Interest Calculator

See how your money grows over time with compound interest. Supports different compounding frequencies.

Principal Amount

Annual Interest Rate (%)

Time Period (years)

Compounding Frequency

Future Value

$—

Total Interest Earned

$—

Growth Multiple

—×

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What is Compound Interest?

Compound interest is the interest calculated on the initial principal and also on the accumulated interest from previous periods. It's often called "interest on interest" and is the key to long-term investment growth.