The Ponderal Index is a measure used to identify abnormalities of weight relative to development. It is of the form (H / W ^(1/3)). This is not a satisfactory index for obesity.


ponderal index =

= (height in inches) / (cube root (body weight in pounds))

= 0.30285 * (height in centimeters) / (cube root (body weight in kilograms)



• 0.30285 is the conversion factor for inches and centimeters (0.3937) divided by the cube root of the conversion factor for pounds and kilograms (2.2)



• The main disadvantage is that it is negatively related to body weight (so that it decreases with increasing obesity).


To read more or access our algorithms and calculators, please log in or register.