Enter your hip circumference and your height into the calculator to determine your body adiposity index (BAI).

BAI Formula

The following formula is used to calculate a body adiposity index.

BAI = ( HIP / (HEIGHT^1.^5)) - 18

  • Where BAI is the body adiposity index (%)
  • HIP is your hip circumference (cm)
  • Height is your height (m)

BAI Definition

What is BAI?

BAI is a term that stands for body adiposity index. It’s used to estimate the total amount of weight on your body that is fat.

It should be noted that this is only an estimation, and there are many ways to estimate body fat amounts and percentages.

Example Problem

How to calculate BAI?

First, determine the circumference of your hip. This can be done with a tape measurer and should be done just below the belly button. For this example, the circumference was found to be 94cm.

Next, determine the person’s height. In this example, the person is found to be 1.85 meters.

Finally, calculate the BAI using the formula above:

BAI = ( HIP / (HEIGHT^1.5)) – 18

BAI = ( 94 / (1.5^1.5)) – 18

BAI = 33.16%

FAQ

What is the difference between BAI and BMI?

BAI (Body Adiposity Index) measures the percentage of body fat in an individual using hip circumference and height, whereas BMI (Body Mass Index) calculates body fat based on an individual’s weight and height. BAI focuses more on the distribution of fat, while BMI is a general estimate of body fat based on mass.

Why is hip circumference used in calculating BAI?

Hip circumference is used in the BAI formula because it provides a more accurate representation of fat distribution, especially in the lower body. It is believed to be a better indicator of adiposity and related health risks than waist circumference or waist-to-hip ratio, particularly in terms of assessing the risk of cardiovascular diseases.

Can BAI be used for all age groups?

While BAI can be a useful tool for estimating body fat percentage in adults, its accuracy and applicability across different age groups, especially in children and the elderly, may vary. Age-specific considerations and adjustments might be necessary for these groups due to differences in body composition and fat distribution patterns.