Body Mass Index (BMI) Charts (for Parents) - Nemours KidsHealth - Teen body mass
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Individuals with the same BMI may have different amounts of body fat. Persons may Use this calculator for children and teens, aged 2 through 19 years old. One place to start is by learning about body mass index, or BMI, a calculation that estimates how much body fat a person has based on his or her weight and height. For example, it's very common for teens to gain weight quickly — and see their BMI go up — during puberty.