This chart shows body mass index (BMI) percentiles for boys ages 5 to 19 based on a 2007 World Health Organization reference. The percentiles, ranging from 3rd to 97th, indicate the percentage of boys in the population with a BMI below a given value. The 50th percentile line represents the median BMI.

1. BMI-for-age BOYS
5 to 19 years (percentiles)
30 30
97th
28 28
26 26
85th
24 24
BMI (kg/m²)
22 50th 22
20 20
15th
18 18
3rd
16 16
14 14
Months
12 3 6 9 3 6 9 3 6 9 3 6 9 3 6 9 3 6 9 3 6 9 3 6 9 3 6 9 3 6 9 3 6 9 3 6 9 3 6 9 3 6 9 12
Years 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
Age (completed months and years)
2007 WHO Reference