How Long to Double Money at 6% – Rule of 72
At a 6% annual return, your money doubles in approximately 12 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 find that money invested at 6% per year doubles in about 12 years.