How it works
- Enter starting amount and monthly contribution.
- Enter an estimated annual return and time horizon.
- The calculator estimates future value with compounding.
Compound Interest Calculator
%
years
Future Value
$124,379
Total Contributions
$53,000
Estimated Growth
$71,379
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Formula
Growth depends on periodic compounding and contributions over time.
Example
$5,000 start + $200/month at 7% for 20 years → future value estimate
FAQ
It’s when you earn interest on both your original money and previous interest.
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