Ponderal Index Calculator
Health & FitnessCalculate your Ponderal Index, a body-mass measure that scales weight by height cubed instead of squared, often more accurate for very tall or short people.
Ponderal Index
Your Ponderal Index, calculated as weight divided by height cubed.
Category
Normal weight
Your weight category based on standard Ponderal Index ranges.
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Frequently Asked Questions
What is the Ponderal Index?
The Ponderal Index is a body-mass measure similar to BMI, but it divides weight by height cubed instead of height squared. This scaling makes it more consistent across a wider range of heights than BMI.
How is Ponderal Index different from BMI?
BMI can overestimate body fat in very tall people and underestimate it in very short people, because weight does not scale exactly with the square of height. The Ponderal Index cube scaling corrects for this in some populations, though BMI remains far more widely used in practice.
Is the Ponderal Index also used for newborns?
Yes, a version of the Ponderal Index is commonly used to assess whether the weight of a newborn is proportionate to their length, which is a separate clinical application from the general adult version used here.
What is a healthy Ponderal Index?
A Ponderal Index between roughly 11 and 15 kg/m3 is generally considered normal weight for adults, with values below 11 considered underweight and above 17 considered obese.
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