What is a person’s ideal weight, and how do height, age, ... The CDC’s BMI charts for children use percentiles that compare measurements with boys and girls of the same age and gender.

The CDC provides a BMI calculator for children and teens. A person enters the child’s height, weight, age, and sex. The results give the BMI and indicate whether the weight is in a healthy range.

The data in the charts below comes from the World Health Organization (WHO) for children younger than 2 and the U.S. Centers for Disease Control and Prevention (CDC) for children age 2 and older.

To tell whether a young adolescent has a healthy weight, it can help to know the average for their age and sex. The averages for 12-year-olds are 89 pounds, for males, and 92 pounds, for females ...