Body mass index (BMI) for boys, ages 2 to 20

Healthy and overweight ranges by age and BMI for boys age 2 to 20.

Adapted from U.S. Department of Health and Human Services (2000). Clinical Data on United States Children. Available online: http://www.cdc.gov/growthcharts/

Use the chart to locate your child's BMI and age.

  • Children with a BMI in the white zone are considered underweight.
  • Children with a BMI in the green zone are considered to have a normal weight.
  • Children with a BMI in the yellow zone are considered at risk for being obese.
  • Children with a BMI in the red zone are considered obese.
  • A child who has a large upward change in BMI percentile, even if she is not considered overweight, should be evaluated to determine the cause.
  • A child who has continuously been in the 85th, 90th, or 95th percentile range is probably growing normally (homeostasis) for his body type.

Last Updated: March 17, 2008

Medical Review: Michael J. Sexton, MD - Pediatrics & Louis Pellegrino, MD - Developmental Pediatrics

related physicians

related services

Bon Secours International| Sisters of Bon Secours USA| Bon Secours Health System

This information does not replace the advice of a doctor. Healthwise disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. Privacy Policy. How this information was developed to help you make better health decisions.

© 1995-2010 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.