Compound Interest Calculator
Annual growth and interest earned.
Future balance
1,628.8946
Interest earned
628.8946
Optional: sends these inputs and this result to AI. Avoid confidential or sensitive information.
About Compound Interest Calculator
Compound interest earns returns on both the original investment and previous interest. With annual compounding, the future balance is principal multiplied by (1 + annual rate / 100) raised to the number of years.
Important considerations
Assumes a constant nonnegative rate and whole years, with annual compounding and no additional deposits. Taxes, fees, inflation, and investment risk are excluded; this is not financial advice.
Want to understand the math?
Read our plain-language guide: How Compound Interest Works (And Why Starting Early Matters)