Evaluate Your Child's BMI
Because children and teenager's amounts of body fat changes as they grow and girls and boys differ in their body fatness as they mature, BMI for children and teens is measured differently than adults.
For children and teenagers, BMI is determined based on gender and age-specific growth charts. These charts are used for children and teenagers 2-20 years of age.
Step 1: Determine you child's BMI.
Please enter your child's height and weight in the form below, and then click the Calculate button to find your Body Mass Index.
Step 2: Look up your child's BMI-for-age percentile.*
Boys (2-20) BMI-for-age table
Girls (2-20) BMI-for-age table
*How to use the charts: Find where your child's age (at the bottom of the chart), and your child's BMI number (on the sides of the chart) meet in the middle. Look along the corresponding curved line and you'll see your child's BMI-for-age percentile.
If your child's BMI-for-age percentile is:
| < 5 percentile: |
Underweight |
| 85 percentile to 95 percentile: |
At risk for overweight |
| ≥95 percentile: |
Overweight |
