Height (in): Weight (lb): Height (m): Weight (kg):
>30 = obese: >lbs
25-29 is overweight.
18.5 to 25 is normal: lbs to lbs
For pediatrics, see Pediatrics BMI calculator
More information on interpreting BMI is available from CDC and from a useful website called Halls.MD. Body Mass Index is defined as weight in kg divided by (height in meters) squared. http://MountainMeadow.us/bmi