Compound Interest Calculator — Investment Growth Over Time

Calculate how your savings or investments grow over time with compound interest and optional monthly contributions.

Currency

Starting amount

Interest rate (% per year)

Time period (years)

Monthly contribution

Compound frequency

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Final value

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Total balance after growth

Interest earned

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Profit from compound interest

Total contributions

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Starting amount + deposits

Growth multiplier

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Final ÷ starting amount

Compound interest allows your money to grow faster by earning interest on both your initial deposit and accumulated interest.