Financial Calculators

Interest Calculator

Model how an initial principal may grow under an assumed annual rate and compounding schedule.

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Calculate compound interest, ending balance, interest earned, and effective annual rate using common compounding frequencies.

Frequently Asked Questions

What is compound interest? +

Compound interest is interest earned on both the original principal and previously accumulated interest.

Which compounding frequencies are supported? +

The calculator supports annual, semiannual, quarterly, monthly, and daily compounding.

Are investment returns guaranteed? +

No. The calculator uses the rate you enter and does not predict or guarantee actual investment performance.

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