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Body mass index (BMI) for boys, ages 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.
Primary Medical Reviewer Kathleen Romito, MD
- Family Medicine
Primary Medical Reviewer Michael J. Sexton, MD
- Pediatrics
Specialist Medical Reviewer Louis Pellegrino, MD
- Developmental Pediatrics
Last Updated March 22, 2006

WebMD Medical Reference from Healthwise

Last Updated: March 22, 2006
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
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