Rule of 72 evaluator uses Rule of 72 = 72/Rate of Interest as Whole Number to evaluate 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 evaluate Rule of 72 using this online evaluator? To use this online evaluator for Rule of 72, enter Rate of Interest as Whole Number (i) and hit the calculate button.