MD-Health.com offers children's height and weight charts. Large health organizations, including the Centers for Disease Control and World Health Organization, maintain up-to-date height and weight information for children, intended primarily for health providers.
The height and weight charts on MD-Health.com present the data according to age and gender, with either the average weight and height listed for that age and gender, or a range of average weights and heights within that age and gender.
However, average body weight for a population does not necessarily reflect ideal body weight. In addition, average height and weight can vary with national trends and other factors. No individual child is truly average, so variations from the heights or weights listed in charts should be taken with a grain of salt.