What is the perfect height for girl in age 18?

The perfect height for a girl aged 18 varies depending on individual factors such as genetics, ethnicity, and nutrition. Generally, the average height for women aged 18 in the United States is around 5 feet 4 inches (162.6 cm). However, it's important to note that there is a wide range of normal heights for women, and that everyone's ideal height is unique to them.

It is important to focus on overall health and well-being, rather than trying to conform to a specific height ideal. Eating a balanced diet, getting regular exercise, and maintaining a healthy lifestyle can contribute to overall physical health and well-being, regardless of height.