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Compound Interest Calculator
Calculate compound interest returns
compound interestinvestmentreturns
📖 How to Use
- Enter the initial principal
- Enter the annual interest rate
- Enter the investment period in years
- Optionally add a monthly contribution
- Click Calculate Returns
📐 Formula
A = P(1+r/n)^(nt) + PMT×((1+r/n)^(nt)−1)/(r/n) Where P=principal, r=annual rate, n=compounding frequency, t=years, PMT=periodic contribution
❓ FAQ
What's the difference between compound and simple interest?▾
Simple interest earns only on the principal; compound interest earns on both principal and accumulated interest, growing faster over time.
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About Compound Interest Calculator
This tool is completely free, no registration required. Works directly in your browser. Supports both PC and mobile devices.
Compound Interest Calculator is a free online tool that works on both PC and mobile. No registration or download required — just open in your browser. Results are accurate and reliable for everyday use and professional reference.