Compound Interest Calculator
See how your investments grow over time with compound interest and optional monthly contributions.
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Final Amount
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Total Interest Earned
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Total Contributions
Year-by-Year Growth
| Year | Balance | Interest | Contributions |
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About this compound interest calculator
Estimate how savings or investments may grow when interest is reinvested over time. It is useful for comparing contribution amounts, time horizons, and interest assumptions.
Keep in mind
- Results are estimates based on the rate and schedule you enter.
- Real investments can rise or fall and may include taxes or fees.
- Longer time periods can make compounding more noticeable.