Here are the methods that the Centers for Disease Control and Prevention (CDC) recommend to measure a child's height:
- Remove the child’s shoes, bulky clothing, and hair ornaments, and unbraid hair that interferes with the measurement.
- Take the height measurement on flooring that is not carpeted and against a flat surface such as a wall with no molding.
- Have the child stand with feet flat, together, and against the wall. Make sure legs are straight, arms are at sides, and shoulders are level.
- Make sure the child is looking straight ahead and that the line of sight is parallel with the floor.
- Take the measurement while the child stands with head, shoulders, buttocks, and heels touching the wall. Depending on the overall body shape of the child, all points may not touch the wall.
- Use a flat headpiece to form a right angle with the wall and lower the headpiece until it firmly touches the crown of the head.
- Make sure the measurer’s eyes are at the same level as the headpiece.
- Lightly mark where the bottom of the headpiece meets the wall. Then, use a metal measuring tape to measure from the base on the floor to the marked measurement on the wall to get the height measurement.
- Accurately record the height to the nearest 1/8 inch or 0.1 centimeter.