What Is the Body Adiposity Index Calculator?
The Body Adiposity Index estimates total percentage body fat using a direct anthropometric ratio of hip circumference and height.
How Does the Body Adiposity Index Calculator Work?
Applies Dr. Richard Bergman’s equation calibrated against dual-energy X-ray absorptiometry (DEXA).
Body Adiposity Index Calculator Formula & Variables
The core mathematical equation utilized by this calculator is expressed as:
BAI (%) = [Hip Circumference (cm) ÷ (Height (m))^1.5] - 18
Scales hip girth against height to the 1.5 power and subtracts 18 to estimate body fat percentage.
How to Use the Body Adiposity Index Calculator
- Measure hip circumference at the widest point and standing height in centimeters.
Step-by-Step Example Calculation
Female (98 cm hip, 168 cm height)
Input Values:
gender:female
hipCm:98
heightCm:168
Understanding Your Result
Outputs an estimated body fat percentage along with standard clinical category classification.
Factors That Affect the Result
- Pelvic skeletal structure, gluteal muscular development, and adipose distribution.
When Should You Use This Calculator?
- Assessing adiposity when no calibrated scale is accessible or as an adjunct to BMI.
Assumptions & Limitations
- Athletes with heavily developed gluteal musculature may receive inflated body fat estimates.
Frequently Asked Questions
Calculation Accuracy & Reference Note
Bergman RN, Stefanovski D, et al. A better index of body adiposity. Obesity. 2011.