Enter the height and weight into the calculator to determine the Cormic Index. This calculator can also evaluate any of the variables given the others are known.

Cormic Index Formula

The following formula is used to calculate the Cormic Index.

CI = (H^2) / W


  • CI is the Cormic Index
  • H is the height of the individual (cm)
  • W is the weight of the individual (kg)

To calculate the Cormic Index, square the height of the individual, then divide the result by the weight of the individual. The Cormic Index is a measure of body proportionality, often used in anthropometric studies.

What is a Cormic Index?

A Cormic Index, also known as sitting height ratio, is a measure used in anthropometry to determine the proportion of a person’s total height that is due to their torso. It is calculated by dividing the sitting height by the total height, both measured in the same units. This index is used in various fields such as ergonomics, nutritional assessment, and growth studies.

How to Calculate Cormic Index?

The following steps outline how to calculate the Cormic Index.

  1. First, determine the height of the individual (H) in centimeters.
  2. Next, determine the weight of the individual (W) in kilograms.
  3. Next, gather the formula from above = CI = (H^2) / W.
  4. Finally, calculate the Cormic Index.
  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.

Height (H) = 170 cm

Weight (W) = 65 kg