Rule of 72 Calculator
Calculate how long it takes to double your money. Enter an interest rate to find doubling time, or enter years to find required rate.
14.7Kuses
8/10(365)
The Rule of 72
The Rule of 72 is a simple formula: divide 72 by your annual interest rate to estimate how many years it takes to double your money. For example, at 8% interest, money doubles in roughly 9 years.
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Disclaimer: This tool is provided as-is for informational and educational purposes only.