Compound Interest Calculator

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Compound Interest Formula

An easy way to think about compound interest is interest building on interest. It’s the interest on a loan or deposit calculated based on both the initial principal and the accumulated interest from previous periods. The compound interest formula is P (1 + r/n)^(nt), where P is the initial principal balance, r is the interest rate, n is the number of times interest is compounded per time period and t is the number of time periods.