Enter the mass and height of the individual into the calculator to determine the Ponderal Index; this calculator can also evaluate the mass or height given the Ponderal Index is known.

Ponderal Index Formula

The following formula is used to calculate the Ponderal Index:

PI = m/{h^3}


  • PI is the Ponderal Index
  • m is the mass of the individual
  • h is the height of the individual

To calculate the Ponderal Index, divide the mass of the individual by the cube of their height.

What is a Ponderal Index?

The Ponderal Index (PI) is a calculation used to assess a person’s leanness or corpulence. It is similar to the Body Mass Index (BMI), but it is considered to provide a more accurate representation of an individual’s leanness. The PI is calculated by dividing the individual’s mass by the cube of their height. The result is then compared to a reference range to determine whether the individual is underweight, normal weight, overweight, or obese. The PI is often used in medical and health-related research to study the relationship between body size, health, and disease risk. It is particularly useful in studies involving children and adolescents, as it takes into account the changes in body composition that occur with growth and development.

How to Calculate Ponderal Index?

The following steps outline how to calculate the Ponderal Index.

  1. First, determine the weight of the individual (kg).
  2. Next, determine the height of the individual (m).
  3. Next, calculate the body mass index (BMI) using the formula: BMI = weight (kg) / height^2 (m^2).
  4. Finally, calculate the Ponderal Index using the formula: Ponderal Index = weight (kg) / height^3 (m^3).
  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.

weight (kg) = 70

height (m) = 1.75