Compound Interest Calculator

What Will Your Money Grow To?

See the real power of compounding — what consistent investing actually builds.

40 years of growth
$
$
%

Or pick a real benchmark · approx. 10-yr avg return

Past performance does not predict future results.

Portfolio Over Time

253341495765
Growth

Portfolio at Age 65

$1.5M

$1,475,521

Total You Invest$250,000
Market Growth+$1,225,521
Your money (17%)Market growth (83%)

Growth Milestones

Age 30 (5yr)$49,973
Age 35 (10yr)$106,639
Age 40 (15yr)$186,971
Age 45 (20yr)$300,851
Age 50 (25yr)$462,290
Age 55 (30yr)$691,150
Age 60 (35yr)$1.0M
Age 65 (40yr)$1.5M

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The 7% Rule

The S&P 500 has averaged ~10% annually before inflation, ~7% after. Most financial planners use 7% for projections.

Start Earlier, Not Bigger

Starting 10 years earlier often beats doubling your contribution. Time is the most powerful variable.

Projections assume a fixed annual return. Actual market returns vary. Not financial advice — consult a fiduciary advisor.