How to Calculate Rule of 72?
Rule of 72 calculator uses Rule of 72 = 72/Rate of Interest as Whole Number to calculate the Rule of 72, Rule of 72 is a simplified way to determine how long an investment will take to double, given a fixed annual rate of interest. Rule of 72 is denoted by Rule of 72 symbol.
How to calculate Rule of 72 using this online calculator? To use this online calculator for Rule of 72, enter Rate of Interest as Whole Number (i) and hit the calculate button. Here is how the Rule of 72 calculation can be explained with given input values -> 3.6 = 72/20.