Compound Growth Calculator

The most powerful force in investing isn't timing the market — it's time in the market. See what consistent contributions and compounding actually look like over time.

Parameters

Starting Amount$10.0K

Initial investment

Monthly Contribution$500/mo

Amount added each month

Annual Return10%

S&P 500 historical avg: ~10%

Time Horizon20 yrs

Years to compound

Growth Over Time

Total Value

Contributions

Yr 0Yr 5Yr 10Yr 15Yr 20

Milestones

Educational only. This calculator assumes a constant annual return rate. Actual market returns vary significantly year to year. Past performance does not guarantee future results. Not investment advice.