Conicity Index Calculator
Assess central abdominal fat distribution using waist, weight, and height
Theoretical range between 1.0 (cylinder) and 1.73 (double cone)
Conicity Interpretation
More cylindrical distribution
Associated with increased visceral fat
Mathematical Formula & Scientific Methodology
Formula: Valdez Conicity Index (1991)
CI = Waist (m) / [0.109 × √(Weight (kg) / Height (m))]Models human body shape changes from a cylinder (no central bulge) toward a double cone with a shared base at the waist.
Model Assumptions
- Adults aged 18+
Variables & Standard Units
| Symbol | Physiological Meaning | Unit |
|---|---|---|
| Waist | Waist circumference in meters | m |
| Weight | Body mass in kilograms | kg |
| Height | Stature in meters | m |
Scientific Limitations
- Formula assumptions based on constant average human body density of 1.05 g/cm³
Peer-Reviewed Scientific Citations
Obesity: preventing and managing the global epidemic. Report of a WHO consultation (2000)
World Health Organization (2000) — WHO Technical Report Series, 894, 1-253
Key Finding: Standard international adult BMI classifications: Underweight (<18.5), Normal (18.5-24.9), Overweight (25.0-29.9), Obesity Class I (30.0-34.9), Class II (35.0-39.9), Class III (>=40.0).
Frequently Asked Questions
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