# Ponderal Index (Corpulence Index) Calculator

Calculate your ponderal index also known as corpulence index or rohrer's index with this simple calculator. Ponderal Index is more accurate compared to the Body Mass Index.

Enter the required fields and click the **Calculate Ponderal Index** button.

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## About Ponderal Index Calculator

This calculator is used to calculate your **ponderal index** also known as **corpulence index** or **rohrer's index**. Ponderal Index is more accurate compared to the Body Mass Index.

### Using Ponderal Index Calculator

- Choose Adult or Infant/Child.
- Enter the Weight either in pounds (lb.) or in kilogram (kg).
- Enter the Height in Centimeters (cm) or in Feet (ft.) and Inches (in.).
(NOTE: For an **infant**, you can use the crown-heel length for height field.)

- Finally, click the Calculate Ponderal Index button. The ponderal index will be calculated and the result will be displayed in the box below the button.

## Ponderal Index or Corpulence Index or Rohrer's Index

Ponderal index otherwise called as corpulence index or Rohrer's index. This index combines an individual's weight and height and results an index value for classifying the body weight as normal or abnormal. Ponderal index is considered as an improvement over BMI (Body Mass Index). The reason being, BMI considers body as a two-dimensional square, where as ponderal index considers the body as a three-dimensional cube. BMI uses a single formula for adults and infants, whereas PI uses slightly different formula for infants compared to the adult formula. Let's see the formulas used to calculate PI.

### Formula

PI = mass ÷ height^{3}

Where:

- mass = Body weight in kilograms.
- height = Height of an adult in meters (or) crown-heel length of an infant in centimeters.

### Ponderal Index Range

#### PI Range For Adult

Range |
Category |

Less than 8 |
Severe Underweight |

8 - 11 |
Underweight |

11 to 15 |
Normal |

15 to 17 |
Overweight |

17 and above |
Obese |

#### PI Range For Infant/Child

Range |
Category |

2.2 - 3 |
Normal |

Page Last Modified On:** Jul 15, 2021 **

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