Body Mass Index and BMI Calculator
Body Mass Index and BMI Calculator The body mass index (BMI) is a number calculated from a person's weight and height. The BMI is calculated by dividing the body mass by the square of the body height and is expressed in kilogrammes per square metre (kg/m2), with mass in kilogrammes and height in metres. A table or chart that presents BMI as a function of mass and height using contour lines or colours for different BMI categories and may utilise other units of measurement can be used to calculate BMI. Based on tissue mass (muscle, fat, and bone) and height, the BMI is a handy rule of thumb used to generically describe a person as underweight, normal weight, overweight , or obese . BMI ranges that are widely recognised are underweight (under 18.5 kg/m2), normal weight (18.5 to 25), overweight (25 to 30), and obese (over 30) BMI Formula The BMI has limitations that make it less useful than some of the alternatives when used to predict an individual's health rather than as a sta...