| Year | Contributions | Interest | Balance |
|---|---|---|---|
Enter investment details to see growth | |||
Add regular monthly contributions to your principal and watch your savings grow faster. The calculator shows how consistent investing combined with compound interest builds wealth over time.
Choose annually, monthly, or daily compounding to match your savings account or investment. More frequent compounding produces slightly higher returns because interest is calculated and added more often.
See a detailed yearly breakdown showing cumulative contributions, cumulative interest earned, and your growing balance. Understand exactly how your money grows over time.
All calculations run in your browser with no server calls. Your investment amounts, contribution amounts and financial data are never uploaded, and the tool works offline once loaded.
Compound interest means you earn interest on both your initial principal and the accumulated interest from previous periods. Over time, this creates exponential growth rather than linear growth, allowing your savings or investments to grow faster.
The calculator supports annually (once per year), monthly (12 times per year), and daily (365 times per year) compounding. More frequent compounding produces slightly higher returns because interest is calculated and added more often.
Yes. Enter your monthly contribution amount and the calculator will add it at the start of each month, then apply interest throughout the year. This shows how regular savings combined with compound interest can build significant wealth over time.
No. All calculations run locally in your browser with no server calls. Your investment amounts, contribution amounts and financial data are never uploaded, and the tool works offline once loaded.
Simple interest is calculated only on the principal. Compound interest is calculated on the principal plus accumulated interest, so your balance grows faster over time. The difference becomes dramatic over many years or with regular contributions.
This compound interest calculator provides estimates for general informational purposes only and is not financial advice. Actual investment returns vary and are not guaranteed. Past performance does not predict future results. Verify all figures with a qualified financial professional before making decisions.