Compound Interest Calculator
Calculate how your investment grows with compound interest over time.
Future Value
20,096.61Total Interest Earned
10,096.61
Original Principal
10,000
| Year | Balance |
|---|---|
| 1 | 10,722.9 |
| 2 | 11,498.06 |
| 3 | 12,329.26 |
| 4 | 13,220.54 |
| 5 | 14,176.25 |
| 6 | 15,201.06 |
| 7 | 16,299.94 |
| 8 | 17,478.26 |
| 9 | 18,741.77 |
| 10 | 20,096.61 |
Related Guide
Compound Interest: How Your Money Actually Grows
About This Tool
Free compound interest calculator — enter a starting principal, annual interest rate, time period, and compounding frequency (annually, monthly, or daily) to see exactly how your money grows. Compound interest is often called the most powerful force in personal finance because interest earns interest: each period's gains get added to the principal before the next period's interest is calculated, so growth accelerates over time rather than staying flat like simple interest. This tool shows the final future value, the total interest earned, and a year-by-year breakdown so you can see exactly how the snowball effect builds. Useful for planning savings accounts, retirement contributions, or comparing investment options. Runs entirely in your browser — nothing is uploaded or saved.
How to Use
- 1
Enter your principal
Type the starting amount you are investing or saving.
- 2
Set rate, time, and frequency
Enter the annual interest rate, number of years, and how often interest compounds.
- 3
See the growth breakdown
View the final future value, total interest earned, and a year-by-year table.