Compound Interest Calculator
Project how an investment grows with compound interest over time. Choose annual, monthly or daily compounding, add an optional regular contribution, and see the future value, total invested, interest earned and the growth multiple — all computed locally.
🔒 Privacy: all processing happens locally in your browser. Nothing is uploaded.
Contributed at the start of each period (monthly if compounding is monthly).
Future value
164,700.95
100,000.00
64,700.95
1.65×
Compound interest: FV = P × (1 + r/n)^(n×t). Regular contributions are treated as an annuity due.
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