# Rule of 72 Calculator – The Magic of Compound Interest

**Compounding interest** is a wonderful thing, deposit or invest your money in any kind of deposit account. Interest you earn must stay in the account for this interest to benefit you. This is such a simple calculation, but the value of understanding how to double your money with compounding interest is priceless.

**RULE OF 72 Calculator DEFINITION:
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The free online Rule of 72 Calculator is a really nifty financial calculator that uses the rule of 72 formula for determining how many years it will take for your investment to double. The Rule of 72 is an easy way to find out the approximate amount of time that it will take for your current invested amount to double. Try out the free Rule of 72 Calculator and then be sure and use all of our other free calculators!

**RULE OF 72 FORMULA:
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To use this simple 72 rule calculator, divide the interest rate of your investment by 72 to determine the approximate number of years it will take for your investment to double.

**CALCULATE RULE OF 72:
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Try out our rule of 72 calculator above now!

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