BODY MASS INDEX
(B.M.I.)
Calculating B.M.I.
Weight (kg) = B.M.I. (kg/m2)
Height2 (m2)
Interpreting B.M.I.
• < 18 = Underweight• 20-25 = Normal range• 25-30 = Overweight• 30-35 = Obese (Grade I)• 35+ = Obese (Grade II)
B.M.I. Graph
Stature-for-age/Weight-for-age– BOYS – 2 to 20 years
Gro
wth
Charts - Pe
rcen
tiles
Length-for-age/Weight-for-age – BOYS – Birth to 36 months
Gro
wth
Charts - Pe
rcen
tiles
Head circumference-for-age/Weight-
for-length - BOYS – Birth to 36 months
Gro
wth
Charts - Pe
rcen
tiles
Weight-for-stature– BOYS
Gro
wth
Charts - Pe
rcen
tiles
Length-for-age/Weight-for-age– GIRLS – Birth to 36 months
Gro
wth
Charts - Pe
rcen
tiles
Stature-for-age/Weight-for-age– GIRLS – 2 to 20 years
Gro
wth
Charts - Pe
rcen
tiles
Head circumference-for-age/Weight-for-length – GIRLS – Birth to 36 months
Gro
wth
Charts - Pe
rcen
tiles
Weight-for-stature– GIRLS
Gro
wth
Charts - Pe
rcen
tiles
Online B.M.I. Calculator
• Link to this website for a B.M.I. Calculator:
Click here