An adult’s weight status is measured using height and weight. For children and teens, weight status is measured in another way. Body Mass Index (BMI) can predict a person’s body fat percentage. Adults with the same weight but different height may not have the same BMI. A child or teen’s age and gender is included when measuring BMI.
Adults 20 and over: Adult BMI Calculator
Children and Teens (ages 2-19): BMI Calculator