BMI Calculator checks your body mass index ( BMI ) and finds out if you're a healthy weight. Use this tool now to know you are a healthy weight, overweight, obese or underweight broadly based on tissue mass (muscle, fat, and bone) and height. BMI Calculator This is a free online calculator to calculate BMI (body mass index) of both adult men and women. BMI values are age-independent and the same for both males and females. BMI Calculator for men , women and children finds Body Mass Index given weight and height. BMI is a ratio of weight and height that indicates health risk due to overweight conditions. Calculate your BMI with our men -specific calculator . Understand how muscle mass affects BMI results, see body fat comparisons, and get health insights tailored for men .