Enter the effectiveness, persuasiveness, and memorability into the calculator to determine the impact score.

## Rule of 3 Formula

The following formula is used to calculate the Rule of 3 impact score.

IS = (E * P * R) / 3

Variables:

- IS is the impact score
- E is the effectiveness of the element (rated from 1-10)
- P is the persuasiveness of the element (rated from 1-10)
- R is the memorability of the element (rated from 1-10)

To calculate the Rule of 3 impact score, multiply the effectiveness of the element by its persuasiveness and memorability. Then, divide the result by 3. This will give you an impact score that reflects how well the element adheres to the Rule of 3, with higher scores indicating a more satisfying, effective, and memorable element.

## What is a Rule of 3?

The Rule of 3 is a principle often used in writing that suggests things that come in threes are inherently more satisfying, effective, or memorable to readers. It’s based on the idea that people process information through pattern recognition, and three is the smallest number of elements required to create a pattern. This concept is widely used in storytelling, speeches, and advertising for its persuasive and impactful effect.

## How to Calculate Rule of 3?

The following steps outline how to calculate the Rule of 3 using the given formula:

- First, determine the effectiveness of the element (E) on a scale of 1-10.
- Next, determine the persuasiveness of the element (P) on a scale of 1-10.
- Next, determine the memorability of the element (R) on a scale of 1-10.
- Multiply the effectiveness (E), persuasiveness (P), and memorability (R) together.
- Finally, divide the result by 3 to calculate the impact score (IS).

**Example Problem:**

Use the following variables as an example problem to test your knowledge.

Effectiveness (E) = 8

Persuasiveness (P) = 6

Memorability (R) = 9