How Long to Double Money at 2% – Rule of 72
At a 2% annual return, your money doubles in approximately 36 years according to the Rule of 72.
How to use this tool
- Enter annual rate in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your years to double and the full breakdown beneath it.
Apply the Rule of 72 to see that a 2% annual rate takes 36 years to double your savings.