怎么樣才能為兒童選擇一件合體的童裝呢？便捷的方法是讓兒童直接試穿或進行精確測量，但是如果兒童不在場或無法測量，只知道孩子的身高仍然可以通過計算選擇合體的童裝。 

In general, children's head accounts for 20% of the total height, and body height accounts for 80% of the total height.

When choosing clothes for children, body height is usually the standard.

Children's shorts are approximately 30% of body height; children's shirts are about 50% of body height: Children's trousers are about 75% of body height; children's jackets are about 49% of body height; children's suits are about 53% of body height; children's long clothes are about 70% of body height; girls' dresses are about 78% of body height.

For example, a girl with a height of 100 cm has a height of 100 centimeters of 80% and about 80 centimeters.

If you choose to buy a dress, the length of the garment is 80 centimeters 70% or 56 centimeters long.

If you choose to buy a shirt with a length of 80 centimeters of 50% or 40 centimeters, if you go out and choose children's clothing for the children at home, you can calculate according to this formula and choose a satisfactory garment for the children.

Three, the size of the children's clothing in Japan corresponds to size 50#, height 50 centimeters, weight 3 kilograms, newborn 60# height 60 cm, body weight 6 kilograms, body weight 6 kilograms, 3 months 70# height 70 centimeters, weight 9 kilograms, half year old 80# height 80 centimeters body weight 11 kilograms, one year old to one and a half years old 12-18m90# height 90 centimeter body weight 90 kilograms.