Body Adiposity Index Calculator

The Body Adiposity Index (BAI) estimates body fat percentage based on an individual's hip circumference and height.

Hip Circumference: Measure the circumference of the hips at the broadest part of the buttocks.
Height: Measure the individual's height in meters.

Hip Circumference in cm

Height in cm

Metric units

Imperial units

No Body Adiposity Index calculated yet.

Body Adiposity Index (BAI)

The Body Adiposity Index (BAI) presents a unique approach to gauging body fat percentage by considering an individual's hip circumference and height. In contrast to conventional methods such as Body Mass Index (BMI), which factors in weight and height, BAI offers a streamlined and potentially more precise measure of body fat percentage, eliminating the necessity for weight-based assessments.

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Calculation Formula:

                    BAI = (Hip Circumference (cm) / Height (m))^1.5  - 18

Here are the critical components of the formula:

Hip Circumference: Measure the circumference of the hips at the broadest part of the buttocks.
Height: Measure the individual's height in meters.
Constant (-18): The constant (-18) includes the formula to align the BAI values with established body fat percentage ranges.

Once you have the hip circumference and height measurements, plug them into the formula to calculate the Body Adiposity Index. The resulting value is an estimate of body fat percentage.

It's important to note that while BAI has been proposed as an alternative to BMI, it has limitations and may only be as accurate for some populations. Some criticisms of BAI include:

Ethnic and Gender Differences: BAI may not be equally accurate across different ethnic groups and genders.
Athletes vs. Sedentary Individuals: BAI might need to differentiate better between athletes with high muscle mass and sedentary individuals with excess body fat.
Generalizability: The original BAI formula was derived from a specific population, and its generalizability to diverse populations is still a subject of research.
Not Suitable for Certain Populations: BAI may not be suitable for specific populations, such as children, elderly individuals, or those with significant muscle mass.