Very intuitive BMI calculator. This BMI calculator allows you to quickly calculate the ratio of body mass index - BMI. Result is calculated according to general reading table created by World Health Organization (WHO). The BMI is meant to be used as a simple means of classifying physically inactive individuals with an average body composition. BMI categories (underweight, overweight or obese) from general reading table are inappropriate for athletes, children, the elderly, and the infirm becaus