Ponderal Index Calculator
Calculate ponderal index from height and weight as an alternative to BMI using this free body composition calculator in your browser.
Enter Values
How to use this calculator
- Enter weight (kg) and height (m).
- Read the ponderal index.
How it works
Ponderal index = weight ÷ height³ (kg/m³).
Worked example
80 kg, 1.8 m. ≈ 13.72 kg/m³.
Common mistakes
- Confusing it with BMI (which uses height squared).
- Mixing units — use kilograms and metres.
Frequently asked questions
How does the Ponderal Index differ from BMI?
It divides weight by height cubed instead of squared, which stays more consistent across very tall or very short people than BMI.
What is a normal Ponderal Index?
For adults roughly 11–14 kg/m³ is typical, though it is used more for infants and at the extremes of height.
How is it better than BMI?
Because it cubes height, it's more consistent for very tall or short people. It's a guide, not medical advice.
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Cite this tool
Zerdly. (2026). Ponderal Index Calculator. Retrieved from https://www.zerdly.com/tools/ponderal-index-calculator/
Tip: Enter any known values to calculate the remaining results.
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