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Height |
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Hip |
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BAI Calculator – Body Adiposity Index for Accurate Body Fat Estimation
The BAI Calculator estimates your body fat percentage using only your hip circumference and height. Unlike BMI, which uses weight and height, BAI offers a potentially more accurate representation of body fat, especially across diverse populations. This tool is non-invasive and requires no scales or fat calipers.
How to Use the BAI Calculator
Enter your hip circumference in centimeters or inches, and your height in centimeters or feet/inches. The BAI formula will estimate your body fat percentage and categorize it as underweight, healthy, overweight, or obese.
Body Adiposity Index (BAI) Formula
BAI = (Hip Circumference in cm) / (Height in m)1.5 - 18
This formula was developed as an alternative to BMI and has shown to correlate better with actual body fat in some studies, especially among Latin American and African populations.
BAI Classification Chart
| Body Fat (%) | Category |
|---|---|
| < 15% | Underweight |
| 15% – 20% | Healthy (Men) |
| 21% – 32% | Healthy (Women) |
| 33% – 38% | Overweight |
| > 38% | Obese |
Why Use a BAI Calculator?
The BAI calculator provides a simple way to assess your body fat without using body weight, which can be affected by muscle mass. This makes it more suitable for athletes or individuals with atypical body compositions. It’s especially useful when weighing scales aren't available.
Frequently Asked Questions (FAQs)
How is BAI different from BMI?
BAI uses hip circumference and height, while BMI uses weight and height. BAI is designed to better reflect actual body fat percentage.
Is BAI more accurate than BMI?
In some populations, BAI shows stronger correlation with actual body fat. However, both are estimates and should be used with other health indicators.
What units should I use?
You can use inches/feet or cm/meter, but ensure consistency across hip and height inputs.
Can I use BAI for children?
BAI is intended for adults. Use pediatric-specific tools for assessing body fat in children or teenagers.
Is this calculator medically approved?
No tool replaces clinical evaluation. BAI is a helpful self-assessment tool but consult a doctor for complete analysis.
You may also like: BMI Calculator, BMR Calculator.