Average body mass index charts of boys
The standard CDC charts of childrens (boys) Body Mass index (BMI) are the new recommended method to judge if a child is overweight, obese, normal or underweight.
Use the Body Mass Index BMI calculator to calculate BMI = (weight in kilograms) divided by (height in meters)2.
Then, look up the BMI and Age on these charts for boys, to see if the the BMI is higher than the 85th percentile or 95th percentile lines, which the CDC defines as Overweight boys and Obese thresholds.
Any values of body mass index between the 5th and 85th percentiles, are considered to be within the Normal range for a boy child, not overweight or underweight.

Here is a more complete on-line version of the boys body mass index for Age chart:

You can also download the CDC's own .pdf version of the chart, which has the best printed appearance, from CDC boys BMI chart.pdf. You can also look at the Mens Body Mass Index chart, which shows how BMI changes during adult ages.
Surf onward to:
- Return to the mens BMI calculator, which is fairly gender neutral,
- Or to the Body Mass Index calculator for women,
- Or see the Girls BMI chart, (similar to this page)
- Or visit the halls.md homepage index of all the health calculators.
Last modified 24-May-2008. Copyright
by Steven B. Halls, MD