# Rule of 72 Calculator

If you’re not interested in doing the math in your head, this calculator will use the Rule of 72 to estimate how long a lump sum of money will take to double. Enter your data in they gray boxes.

As a bonus, the Rule of 114 for tripling your money, and the Rule of 144 for quadrupling your money are included.

For a more detailed compound interest calculator, with monthly investments, and daily, monthly, and annual compounding, please see The PoF Compound Interest Calculator.

**Download all PoF calculators in one Excel file**! You will be sent a link to the file and a confirmation to receive notifications of new posts and my quarterly progress note.