Calculate your BMI quickly and easily with this simple app. Body mass index (BMI) is an indirect measure of body fat based on height and weight that applies to adult men and women. The formula is the same for adults and children, as well as with different genders and ethnicity. For a given height, BMI is proportional to mass. However, for a given mass, BMI is inversely proportional to the square of the height. So, if all body dimensions double, and mass scales naturally with the cube of the height, then BMI doubles instead of remaining the same. This results in taller people having a reported BMI that is uncharacteristically high compared to their actual body fat levels. Consult a doctor before starting any weight loss program. WARNING; THIS IS NOT MEDICAL SOFTWARE. CONSULT A PHYSICIAN BEFORE STARTING ANY NEW DIET OR WEIGHT LOSS PLAN. TO BE USED ONLY AS A SUGGESTIVE AID.