Retirement
Rule of 72 Calculator
Rule of 72 Calculator is free to use. Enter your figures below and the result updates as you type. Use it for planning; it is an estimate, not advice.
About the Rule of 72 Calculator
Years to double ≈ 72 ÷ annual return %. The Rule of 114 gives years to triple.
A quick mental estimate. It is less accurate at very high rates.
How to use the Rule of 72 Calculator
- Enter each figure in the boxes above, using the same currency and time units.
- The result updates as you type. Press Calculate to refresh it at any time.
- Change one figure at a time to see how much it moves the result.
Frequently asked questions
What is the Rule of 72 Calculator used for?
A quick mental estimate. It is less accurate at very high rates.
How accurate is the Rule of 72 Calculator?
It applies standard formulas to the figures you enter. Real results depend on actual rates, fees, taxes and timing, so treat the output as an estimate and confirm with your bank or adviser.
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