What is the Standard Value for a Babys Head Circumference?

Update Date: 2024-05-18 Source: Network

Baby Head Circumference Standard Values and Measurement Methods

After birth, babies grow very quickly. To understand their physical development, parents need to regularly test and observe important parts of their bodies. The size of a baby's head circumference varies at different stages, and it is important to be aware of the standard sizes to assess your child's head circumference. So, what are the standard values for baby head circumference? Let's take a look.

1. Baby Head Circumference Standard Values

At birth:

Boys: 31.8-36.3 cm, average 33.9 cm
Girls: 30.9-36.1 cm, average 33.5 cm

One month:

Boys: 35.4-40.2 cm, average 37.8 cm
Girls: 34.7-39.5 cm, average 37.1 cm

Two months:

Boys: 37.0-42.2 cm, average 39.6 cm
Girls: 36.2-41.0 cm, average 38.6 cm

(And so on for subsequent months, with similar ranges and averages for both boys and girls.)

2. Baby Head Circumference Measurement Methods

How can we measure a baby's head circumference most accurately? Baby head circumference refers to the maximum length around the head, so a flexible tape measure should be used. Wrap the tape around the baby's head, passing in front through the middle of the eyebrows and in the back at the most prominent point of the occipital bone. The data obtained by wrapping around the baby's head for one week is the size of the baby's head circumference. Babies usually have less hair, so the thickness of the hair can be ignored. However, for older babies with thicker hair, it is more accurate to measure by parting the hair.