Free money calculator

Compound Interest Calculator

See how an initial investment and regular monthly contributions may grow over time.

Estimate investment growth

Future value$300,851
Total contributions$130,000
Estimated interest earned$170,851
Growth multiple2.31×

Illustration only. Actual investment returns fluctuate and may be negative.

How compound interest works

Compound growth means returns are calculated on both your original principal and previously accumulated returns. Regular contributions can have a major effect over long periods.

Try a range

Compare conservative and optimistic return assumptions instead of relying on one forecast. This calculator does not include taxes, fees, inflation, or market volatility.