Compound Interest Calculator

Watch your investments grow over time

Compounding turns small, consistent contributions into meaningful wealth. Adjust the inputs to see exactly how your balance builds — and how much of it comes from interest alone.

Your plan
$
$
%

Historically, a diversified stock portfolio has averaged ~7% after inflation.

yrs

Compounding frequency

Future balance

$691,150

You invested

$190,000

Interest earned

$501,150

Growth from interest

73%

of final balance

Projected growth

$10,000 growing at 7% over 30 years

ContributionsInterest

Your money earns $501,150 in interest — that's 2.6× what you put in.

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