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Cornell Pediatrics

Body Mass Index

The Body Mass Index relates height to weight and helps to determine ideal body proportions.

Input Weight  kg lbs
Input Height  cm in
 
 
Body Mass Index =

 

  Female Male
Underweight < 19 <20
Acceptable 19 - 25 20 - 25
Overweight 25 - 30 25 - 30
Obese 30 - 40 30 - 40
Morbidly Obese > 40 > 40

The formula is:

BMI = W / H2

where W is the weight in kilograms and H is the height in meters.

For more information on how the BMI should be interpreted, see the Centers for Disease Control and Prevention website.

 

Created: January 10, 2000
Revised: October 3, 2000

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