Compound Interest Calculator — Investment Growth Over Time
Reviewed 2026-06-03 · FinCalc Hub Editorial
Compound interest means your returns earn returns. The longer your money compounds, the more dramatic the growth. Enter your investment to project its future value.
Future value$300,851
Total contributions$130,000
Interest earned$170,851
Compounded monthly. Taxes and inflation are not included.
Frequently asked questions
- What does compounding monthly mean?
- Interest is added to your balance each month, so the next month's interest is calculated on a slightly larger amount.
- Are taxes included?
- No. This shows pre-tax, nominal growth. Real returns depend on taxes and inflation.