The Body Adiposity Index Calculator determines the Body Adiposity Index (BAI) in your body. The BAI is used to determine the body mass percentage that comprises the fat as against the mass which is fat-free. The fat-free mass, as the name carries, encompasses everything in the body except the fat. It is essential to keep in mind that although most people feel that their body adiposity index may be too high, it can also be detrimental to have a body adiposity index that is too low. A body adiposity index classification table (displayed in the section) provides a guideline for what body adiposity ranges are considered to be underweight, healthy, overweight, and obese. You need to feed in your height, age group, gender, and hip circumference to find the Body Adiposity Index (BAI) Percentage.