📈 Compound Interest Calculator
Project how your savings grow with compound interest and regular contributions.
About this tool
See the power of compounding. Enter your starting principal, an annual interest rate, how long you'll invest, and any regular contribution. The calculator compounds at your chosen frequency and shows your future balance, total contributions, and total interest earned, plus a year-by-year growth chart and breakdown table.
Contributions are assumed at the start of each compounding period. All maths runs locally — results are estimates and do not account for tax, fees, or inflation.
Year-by-year breakdown
| Year | Deposited | Interest (cum.) | Balance |
|---|
⚠ Disclaimer: Projections are illustrative estimates assuming a constant rate. Actual returns vary and are not guaranteed. Figures exclude tax, fees, and inflation. This is not financial advice.