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Compound Interest Calculator

Results update automatically as you type.

Compound Interest Formula

Future value

A = P × (1 + R ÷ (100 × n))nT

A = final amount, P = principal, R = annual rate, n = number of compounding periods per year, and T = time in years.

Interest earned

Compound Interest = A − P

The interest is added to the balance at every selected compounding interval.