Compound Interest Calculator
See how an investment grows over time, with optional regular monthly contributions.
Final value
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Total contributed
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Total interest earned
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How this works
Interest is compounded monthly on the starting amount, and if you add a monthly contribution, each one starts earning its own compound growth from the month it's added. This is a simplified model assuming a constant rate of return — real investments fluctuate, so treat this as a planning estimate, not a guarantee.