About this app
In this app, you can calculate your BMI by entering your height and weight.The BMI, Body Mass Index is an approximate method used to broadly categorize a person as underweight, normal weight, overweight, or obese based on tissue mass (muscle, fat, and bone) and height.
A normal BMI value means your body weight is optimal for your body height.
https://en.wikipedia.org/wiki/Body_mass_index
