Newborn head size is one of the first concerns for many new parents. In the first days after birth, parents often feel anxious when putting on clothes or hats, worrying about touching the baby’s soft spots.
Many also wonder, “My baby’s head looks bigger or smaller than the baby next to them—is that normal?”
Don’t worry. This article focuses on the medical perspective of newborn head development and what parents should know about Newborn Head Size. If you already have your baby’s head measurement and only want to find the correct hat size, you can go directly to our Baby Hat Size Guide.
Key Takeaways
- Golden growth rate: A newborn’s head circumference grows very quickly, about 2 cm each month during the first three months of life.
- Biological variation: A small difference of 1–2 cm is normal. Doctors usually track the growth using a growth curve chart.
- Protecting the fontanelles: Hats or clothes that are too tight can leave red marks and may cause sensory overload for the baby.
- Adaptive solution: Four-way stretch Bamboo Viscose fabric is a great choice because the hat can gently grow with the baby’s head size.
Average Newborn Head Size: What Is the Standard Measurement According to WHO?
According to standards from the World Health Organization (WHO), the average Newborn Head Size head circumference of a newborn is about 34.5 cm (13.5 inches) for boys and 33.9 cm (13.3 inches) for girls. A difference of 1-2 cm is completely normal, as long as the baby continues to grow steadily along their personal growth chart.
Head circumference is one of the key measurements doctors use to monitor a baby’s brain development during the first months of life. In the newborn stage, a baby’s brain grows very quickly, and the skull expands to adapt to this rapid growth.
Baby Head Growth Chart: Head Growth in the First 3 Months
A baby’s head circumference grows the fastest during the first three months, with an average increase of about 2 cm per month. Because of this rapid growth, rigid cotton hats can quickly become too tight. They may leave red marks on the baby’s head or keep slipping down and covering the baby’s eyes.
Many parents have probably felt the “wallet pain” of buying several newborn-size hats, only to find that they become too tight after just two weeks. In fact, this happens very often because a Newborn Head Size grows very quickly in the first months of life. As babies grow day by day, hats with a rigid shape or low stretch quickly become uncomfortable and no longer fit well.
Anatomy of a Newborn’s Head
Fontanelles, or soft spots, are the spaces between the bones of a newborn’s skull. They help the baby’s head change shape during birth and provide room for the brain to grow. If clothing or hats are too tight or rub strongly against the head, they may press on these soft areas. This can cause sensory overload, which may make the baby feel uncomfortable and cry a lot.
How to Measure Your Baby’s Head Safely
To measure your baby’s head circumference safely, use a soft measuring tape. Place the tape around the widest part of the forehead (just above the eyebrows) and the most prominent part at the back of the head. Make sure the tape fits snugly, but do not pull it too tight.
Practical tip: Try to measure your baby’s head when the baby is feeding or sleeping deeply. This helps keep the baby still and allows you to get the most accurate measurement.
Why Are Bamboo Hats a Great Choice?
To protect a baby’s rapidly growing head, parents should choose stretchy materials instead of rough cotton. The 380 GSM Bamboo Viscose fabric used by SwaddleAn offers excellent four-way stretch. It fits gently on the baby’s head to keep it warm, while helping ensure no red marks are left on the baby’s sensitive skin.
One of the outstanding advantages of SwaddleAn hats is their “growth-adaptive” ability. Thanks to the soft bamboo fibers and the natural stretch of the fabric, the hat can gently expand to fit the newborn head size as the baby grows.
Instead of buying three hats for three months, one bamboo hat from SwaddleAn can stretch and adapt to your baby’s head circumference for many months. In addition, the product meets the OEKO-TEX Standard 100, which ensures that the fabric is tested and free from harmful chemicals.
This is also the core technology behind our best-selling Baby Knotted Cap, designed to help protect a baby’s soft spots. The adjustable knot on the top of the hat allows parents to easily change the depth of the cap for a better and more comfortable fit.
Frequently Asked Questions
Is a 14.5-inch head circumference at birth a problem?
Not at all. Many babies are born with a head circumference larger than the average (above the 50th percentile) and are still completely healthy. Doctors usually become concerned only if the head circumference increases too quickly over the following months or grows outside the normal pattern on the baby’s growth chart.
Conclusion
Following your baby’s newborn head size should not be a source of stress. Instead, it is a wonderful journey of watching your baby’s brain grow day by day. You can ease the pressure by choosing soft and stretchy clothing that keeps your baby comfortable while their body continues to grow.
Say goodbye to those painful red marks on your baby’s forehead. Discover the 4-way stretch SwaddleAN Baby Hats, designed to gently support every millimeter of your baby’s growth.
