Body Mass (BMI) Calculator

 

  BMI (Body Mass Index) is a measure of body fat based on weight and height. It applies to both women and men.  It is calculated with the following formula :

 weight (in kilograms) ÷ height (in meters²) = BMI

Category

BMI

Underweight

less than 18.5

Healthy Weight

18.5-24.9

Overweight

25-29.9

Obese

30-39.9

Extremely Obese

40 and above

 
 

NIH (the National Institute of Health) classes "overweight" as a BMI of 25 kg/m² or greater. This is consistent with WHO (the World Health Organization) recommendations.

There are limitations. The BMI doesn't take % of body fat content into consideration. So a very muscular person with a low % body fat may fall into the overweight category while an elderly person with a high % body fat could be considered a "healthy weight" .

 

 

 

Enter your weight in pounds:

Enter your height:      feet:       inches:



Your body mass index is: