Compound Interest Calculator
See how your savings grow with compound interest. Add monthly contributions and choose compounding frequency.
$
%
yrs
$ / month
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Total Principal + Contributions
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Total Interest Earned
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Effective Annual Rate (EAR)
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How to use
- Enter principal amount, annual interest rate, and time period in years.
- Select compounding frequency (daily, monthly, quarterly, etc.).
- Add optional monthly contributions to see how additional deposits grow.
- Results show future value, total contributions, total interest, and effective annual rate.
- Click Copy Future Value to copy the final amount.
- All calculations use standard compound interest formulas.
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