Ponderal Index Calculator
A height-cubed alternative to BMI.
Enter your values
ⓘ Live results
Results
- Ponderal index
- 12.86 kg/m³
- Typical range
- 11 - 15 kg/m³
- BMI for comparison
- 23.1
- Interpretation
- Typical range
Quick answer
The ponderal index divides mass by height cubed, making it more consistent than BMI for very tall or very short people.
PI = kg / m³
How to use the Ponderal Index Calculator
- 1Enter weight in kilograms and height in centimetres.
- 2Compare against the typical 11-15 range.
- 3Use alongside BMI rather than instead of it.
Worked example
Using the values the calculator loads with:
Inputs
- Weight75 kg
- Height180 cm
Results
- Ponderal index12.86 kg/m³
- Typical range11 - 15 kg/m³
- BMI for comparison23.1
- InterpretationTypical range
Frequently asked questions
When is PI better than BMI?
At heights well outside 1.6-1.9 m, where BMI systematically misclassifies.
Is it used clinically?
Mostly in neonatal assessment and research rather than routine adult screening.
About this calculator
- Built and reviewed by James Whitfield · How we build and test calculators
- Report an error
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.