Body Mass Index (BMI) Tool for Children and Teens

The body mass index (BMI) is a measure of a person's body fat. The index number uses a person's weight and height. In children and teens, the index can tell you if your child may weigh too little, too much, or is at risk for weighing too much. A child's body fat changes with age. Girls and boys differ in how much body fat they have as they grow.

This tool gives a BMI for children from age 5 to age 19.

Enter child's information

Online Medical Reviewer: Adler, Liora C, MD
Online Medical Reviewer: Finke, Amy, RN, BSN
Date Last Reviewed: 11/1/2020
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