SmartInvestorCalc is a free AI-powered compound interest calculator. Enter your initial investment, annual interest rate, monthly contributions, and time period to instantly see how your money grows over time. No sign-up required.
Compound interest is interest calculated on both your initial principal and the accumulated interest over time. This makes your investment grow exponentially — the longer you invest, the faster it grows.
Compound interest is interest earned on both the original principal and previously earned interest, causing investments to grow faster over time.
Yes, completely free with no sign-up required.
Monthly compounding reinvests interest 12 times per year, generating slightly higher returns than annual compounding.
Enter your initial investment, interest rate, compounding frequency, and time period. The calculator instantly shows your projected balance and total earnings.