Ponderal Index Calculator
Calculate the Ponderal Index (Rohrer's Index) — a height-cubed body mass metric that corrects BMI's bias toward tall people.
How to Use the Ponderal Index Calculator
- Enter your body weight in kilograms.
- Enter your height in centimetres.
- Click Calculate to see your Ponderal Index and weight category.
Referencia Rápida
| De | A |
|---|---|
| PI < 11 kg/m³ | Underweight |
| PI 11–15 kg/m³ | Normal |
| PI > 15 kg/m³ | Overweight |
| Average adult | ~12.5 kg/m³ |
Casos de Uso
- •Assessing body composition for very tall or short individuals.
- •Research comparing body mass metrics across populations.
- •Complementing BMI with a height-cubed alternative.
Fórmula
PI = Weight (kg) / Height (m)³. Normal range is approximately 11–15 kg/m³.
Preguntas Frecuentes
How is the Ponderal Index different from BMI?
BMI divides by height squared; PI divides by height cubed, giving a more accurate reading for very tall or short individuals.
What is a normal Ponderal Index?
A normal PI is roughly 11–15 kg/m³ for adults.
Is this calculator free?
Yes, all OhMyCalc tools are completely free.