Compound Interest Calculator

See how your money grows with compound interest over time

How Compound Interest Works

Compound interest is interest calculated on the initial principal and also on the accumulated interest from previous periods. The formula is A = P(1 + r/n)^(nt) where P is principal, r is annual rate, n is compounding frequency, and t is time in years. Regular contributions amplify the effect dramatically over time — this is why starting early matters so much for long-term wealth building.