Body Mass Index (BMI) puts weight and height together into one number. This number is a better measure than weight because it takes height into consideration. In children, because they are growing, we use “percentile” (%ile) which compares their BMI to what is healthy for other children their age and gender.
Overweight (yellow zone)
85th percentile to 95th percentile
Obese (red zone)
95th percentile or higher
30 kg/m2 or higher
To find out your child’s BMI, ask his or her doctor. Or you can check your child’s BMI by using the "Kids BMI Calculator".
Note: physicians and healthcare providers use the term “obese” as a medical term that means too much body fat. Many children in the obese or red zone will look only a little overweight, but the extra body fat puts them at risk for health problems.