Rule of 72 Calculator
Estimate how long it takes to double your money with a simple mental math shortcut. Divide 72 by your annual interest rate to get the approximate doubling time.
Rule of 72 Examples:
- 6% return → 72/6 = 12 years to double
- 8% return → 72/8 = 9 years to double
- 10% return → 72/10 = 7.2 years to double
- 12% return → 72/12 = 6 years to double
Results
Enter interest rate and click Calculate to see results
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