How to measure growth of kids in first year of life

It can be difficult to determine if a baby or child is growing well and how fast it is growing. You are always with them, so small changes in height and development are not always noticeable. Dress sizes can vary significantly, so the best way to monitor growth is to measure your height and plot it against a growth chart.
Once you know your child’s height, it’s a good idea to record it to see how it changes over time. Your child grows at different rates, and logging how your child’s height is changing can help you identify height changes and growth spikes. Pre-printed growth charts often show different sizes, so you can see where your child’s height is on the scale compared to the “average” height of other children in the same age group. You can check it.
Here is how you can measure your child’s growth accurately at home:
Remove the child or teen’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 or teen 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 or teen is looking straight ahead and that the line of sight is parallel with the floor.
Take the measurement while the child or teen stands with head, shoulders, buttocks, and heels touching the flat surface (wall). (See illustration.) Depending on the overall body shape of the child or teen, 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 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 1/8th inch or 0.1 centimeter