Enter the number of users who have interacted with the content and the total number of users who have seen the content into the calculator to determine the Affinity Index. This calculator can also evaluate any of the variables given the others are known.

## Affinity Index Formula

The following formula is used to calculate the Affinity Index.

AI = (N / T) * 100

Variables:

- AI is the Affinity Index (%)
- N is the number of users who have interacted with the content
- T is the total number of users who have seen the content

To calculate the Affinity Index, divide the number of users who have interacted with the content by the total number of users who have seen the content. Multiply the result by 100 to get the Affinity Index in percentage.

## What is an Affinity Index?

The Affinity Index is a metric used in marketing to measure the likelihood of a certain group of consumers to buy a particular product or service compared to the general population. It helps businesses identify and target specific consumer segments that are more likely to engage with their product or service. The index is calculated by comparing the percentage of a group interested in a product to the percentage of the total population interested in the same product. A score above 100 indicates a higher than average likelihood, while a score below 100 indicates a lower than average likelihood.

## How to Calculate Affinity Index?

The following steps outline how to calculate the Affinity Index.

- First, determine the number of users who have interacted with the content (N).
- Next, determine the total number of users who have seen the content (T).
- Next, gather the formula from above = AI = (N / T) * 100.
- Finally, calculate the Affinity Index.
- After inserting the variables and calculating the result, check your answer with the calculator above.

**Example Problem : **

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

number of users who have interacted with the content (N) = 50

total number of users who have seen the content (T) = 200