The Body Mass Index used in the calculator below, is calculated from an individual's weight divided by the square of the height. The U.S. National Heart, Lung and Blood Institute uses the BMI to classify obesity.
For more free information about the BMI, the BMI Calculator, ideal weight and the relationship with body fat see the Body Mass Index (BMI) FAQ.
To calculate your BMI enter your weight and height in the calculator below. Please note this calculator is only a guide and does not take into account body frame or large muscle volume for example in athletes and body builders. Alternatively you can calculate your body fat from BMI or see our list of body fat calculators based on anatomical measures and skinfold values.
The BMI values correspond to the following body analysis:
- Underweight, BMI = <18.5
- Normal weight, BMI = 18.5-24.9
- Overweight, BMI = 25-29.9
- Obesity, BMI = 30 or greater