Enter the number of experts agreeing on the content and the total number of experts into the calculator to determine the Content Validity Index (CVI). This index is a measure of the extent to which the content under consideration is representative of the construct it is intended to cover.

Content Validity Index Formula

The following formula is used to calculate the Content Validity Index (CVI): 

CVI = (Number of Experts Agreeing) / (Total Number of Experts)

Variables:

  • Number of Experts Agreeing: The number of subject matter experts that agree the content is valid.
  • Total Number of Experts: The total number of experts that were asked to assess the content validity.

To calculate the Content Validity Index, divide the number of experts who agree that the content is valid by the total number of experts. The result is a number between 0 and 1, where a higher number indicates a higher level of agreement and thus a higher content validity.

What is Content Validity Index?

The Content Validity Index (CVI) is a statistical measure used to assess the validity of the content of an instrument or tool. It is often used in the development of surveys, tests, and measurement instruments to ensure that the items included are representative of the construct they are intended to measure. A high CVI indicates that there is a consensus among experts that the content is appropriate and covers all aspects of the construct.

How to Calculate Content Validity Index?

The following steps outline how to calculate the Content Validity Index (CVI).

  1. First, determine the number of experts who agree that the content is valid.
  2. Next, determine the total number of experts that were asked to assess the content validity.
  3. Use the formula CVI = (Number of Experts Agreeing) / (Total Number of Experts).
  4. Finally, calculate the Content Validity Index (CVI).
  5. 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 Experts Agreeing = 15

Total Number of Experts = 20