Healthy Weight for 12-Year-Olds: Is Your Child's Weight Normal?

It depends on the child's height, gender, and overall health. On average, a 12-year-old boy weighs between 75 and 115 pounds, while a 12-year-old girl weighs between 75 and 110 pounds. However, some children may be outside of these ranges and still be perfectly healthy. If you are concerned about your child's weight, it is best to talk to a doctor.