What is the average weight of a 13-year-old?

The average weight of a 13-year-old female is 101 pounds and the average weight of a 13-year-old male is 100 pounds according to the growth charts that have been sourced by the World Health Organization, Gerontology Research Center and the United States Centers for Disease Control and Prevention. Because there are immense hormonal changes, the average weight may fluctuate.

When looking at whether a 13-year-old is at a healthy weight, it is important to take height, build and percentage of body fat into consideration. Calculating a person's body mass index can provide a substantial amount of insight in regard to his or her health.