How to calculate the ponderal index
Enter current height and weight in metric units.
1
Measure height
Use standing height in centimetres, without shoes.
2
Enter weight
Use current body weight in kilograms.
3
Compare with BMI
The rows show the same body size expressed with a squared and a cubic height term.
What does this tool do?
The ponderal index divides weight by height cubed, while BMI divides by height squared. Because the scaling is stronger, the ponderal index is less likely to overstate size in very tall people.
The Formula
Ponderal index = weight (kg) ÷ height³ (m³); typical adult range is about 11–14 kg/m³Frequently Asked Questions
How is the ponderal index different from BMI?
BMI divides weight by height squared; the ponderal index divides by height cubed. The cubic scaling reduces the tendency to overstate size in tall people.
Is it used for adults?
It can be used for adults as a screening descriptor, and it is also used for newborns with different reference charts. The adult range shown here does not apply to infants.