Your Results
Ponderal Index Reference Table
| Category | Ponderal Index (kg/m³) | Interpretation |
|---|---|---|
| Underweight | Less than 11 | Below healthy body composition |
| Normal | 11 - 13 | Healthy body composition |
| Overweight | 13 - 15 | Above healthy body composition |
| Obese | Above 15 | Significantly above healthy composition |
About Ponderal Index
The Ponderal Index (PI), also known as the corpulence index, is a measure of leanness/corpulence of a person calculated as a relationship between mass and height. Unlike BMI, the Ponderal Index uses the cube of height, which better accounts for body composition in taller individuals.
The Ponderal Index Calculator helps you measure your body leanness using your height and weight. It's similar to BMI, but more accurate for taller individuals or those with leaner frames. This tool is great for people who want a clearer picture of their body structure.
What is Ponderal Index?
The Ponderal Index (PI) is a measurement that compares your weight to your height, but it divides your weight by the cube of your height, instead of the square like BMI. This method gives more accurate results for people who are very tall or have athletic builds.
How to Calculate Ponderal Index
The formula is simple:
PI = Height (cm) / Cube root of Weight (kg)
Or in imperial units:
PI = Height (in) / Cube root of Weight (lbs)
Just enter your height and weight into the calculator, and it does the rest for you.
Example
If someone is 180 cm tall and weighs 70 kg:
PI = 180 ÷ ∛70 ≈ 180 ÷ 4.12 ≈ 43.69
This PI value shows a lean body type, more accurately than BMI would.
Why Use the Ponderal Index?
Unlike BMI, which sometimes gives misleading results for tall or muscular people, PI considers the body’s proportions better. Athletes and bodybuilders often prefer this method because BMI may classify them as overweight, even if they have low body fat.
Healthy Ranges
Typical PI range: 42 – 44 is considered healthy for adults
Lower values suggest underweight, while higher values may indicate overweight
Track Your Fitness Accurately
The Ponderal Index Calculator gives a clearer picture of your body structure than BMI. It's a smart choice for those who take fitness seriously and want a reliable tool to measure progress. And the best part? It’s completely free—no $ needed to understand your health better.
Start using the calculator today to track your body leanness the smart way.