How tall do kids of 13years old need to be?

The average height of 13-year-old boys in the United States is 5 feet (152.4 cm). The average height of 13-year-old girls in the United States is 4 feet 11 inches (149.9 cm).

However, there is a wide range of normal heights for children of this age. Some 13-year-olds may be as tall as 6 feet (183 cm), while others may be as short as 4 feet (122 cm).

A child's height is determined by many factors, including genetics, nutrition, and overall health. Some children may experience a sudden growth spurt during adolescence, while others may grow more gradually.

It is important to remember that every child is different, and there is no one "right" height for a 13-year-old. As long as a child is growing at a healthy pace and is in proportion to their body, there is no need to worry about their height.