1. Normal height and weight standards for 1-year-old babies. The height and weight of 1-year-old babies is one of the issues that parents are most concerned about. According to data provided by the World Health Organization (WHO), the average height of a 1-year-old boy is 76.5 cm and weighs 9.2 kg; the average height of a baby girl is 74.9 cm and weighs 8.6 kg. However, this is only a rough standard value. In reality, the growth and development of each baby is different. 2. How to judge