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Investment doubling time calculator

Compare exact constant-growth doubling time with the Rule of 72.

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The Rule of 72 is approximate. Both values assume uninterrupted positive annual compound growth.

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How this tool works

Compare exact constant-growth doubling time with the Rule of 72.

The Rule of 72 is approximate. Both values assume uninterrupted positive annual compound growth.

Change the assumptions and compare scenarios. Results are mathematical estimates and do not account for every tax, fee, market condition or personal circumstance.

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