Rule of 72 Calculator
Calculate how long to double your money at any interest rate using the Rule of 72.
Years to Double
10.3 years
Time to Triple
16.3 years
Time to Quadruple
20.6 years
Rule of 72 Result
| Formula | 72 / rate = years |
| 72 / 7 | 10.3 years |
| Exact (compound formula) | 10.24 years |
| Time to Triple (Rule of 114) | 16.3 years |
| Time to Quadruple (Rule of 144) | 20.6 years |
Years to Double at Various Rates
| 1% | 72.0 years |
| 2% | 36.0 years |
| 3% | 24.0 years |
| 4% | 18.0 years |
| 5% | 14.4 years |
| 6% | 12.0 years |
| 7% | 10.3 years |
| 8% | 9.0 years |
| 9% | 8.0 years |
| 10% | 7.2 years |
| 12% | 6.0 years |
| 15% | 4.8 years |
Use the Rule of 72 Calculator above to calculate your results. Enter your values and see instant results — all calculations run in your browser.
Disclaimer: This calculator is for informational purposes only and does not constitute tax, financial, or legal advice. Results are estimates based on the information you provide and current rates. Always consult a qualified tax professional or financial advisor for advice specific to your situation.
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