The Body Adiposity Index (BAI) of a person simply gauges the content of body fat in percentage form. This can be used together with other measures for body composition such Waist-to-Hip Ratio (WHR) or Body Mass Index (BMI) and Waist-to-Height Ratio (WHtR).
Unfortunately, none of the mentioned methods give a close representation of the body composition and body fat. Because these are all easy and inexpensive relatively, this is preferred for general analysis.
It is not possible to do a precise count of body fat on a living person since fat is found in all of the internal organs of the body. By putting yourself on a weighing scale, this may put some truth to the fact that you have burned some fat.
Formula for Body Adiposity Index:
BAI = (Hip Circumference in centimeters / Height in meters ^ 1.5) – 18
Or, another version of the formula which will yield the same
BAI = (Hip Circumference in centimeters / Height in meters x Square Root of Height in meters) – 18