Compound Interest Calculator Online (Free)
Calculate compound interest and future value for savings and investments. Free, private, browser-based calculator.
Compound interest earns returns on both principal and accumulated interest — the foundation of long-term investing. Understanding the formula helps compare savings accounts, FDs, and mutual fund projections.
Key variables
- Principal — initial amount invested
- Rate — annual interest percentage
- Time — number of years or months
- Compounding frequency — monthly vs yearly makes a big difference