Health Calculator is a very useful utility. BMI [Body Mass Index] BMI index, also known as body mass index, is a measure of whether obesity and standard weight index. Calculation of applicable range: 18 to 65 year old person. Children, teenagers, pregnant women, nursing mothers, the elderly and body health of athletes with the exception of. Who think BMI index remained at about 22 is ideal. You open the software enter your body all the information, and then click the calculation, the Health Calculator will help you calculate your health.