Head and Hat Size Guide

May 23,2024 | EINSKEY

According to Wikipedia, one study in the United States shows, the average adult head circumference to be 55cm (21 3⁄4 ) in females and 57cm (22 1⁄2 in) in males. Another study conducted in UK shows a slightly different result: with the average female head size being 55.2 cm and the average male head size being 57.2 cm.

This figure varies slightly different in United States as well due to its different race/ethnicity mix. According to our experience in serving the United States market, the average head size in United States being 57cm for women and 58cm for men.

Head sizes can be different from person to person. Please make sure you measure your head size to ensure the best fit of your hats. For a comfortable fit, please purchase a hat which is 0.5 to 1cm larger than your head size.

The following chart only gives you an indication for children’s head average sizes for different age groups. As it says, “each child is different” and “measure twice cut once”, please make sure you measure the child’s head size to ensure a good fit. To purchase a hat 0.5 to 1cm larger than the child’s head size for a comfortable fit.

HOW TO DETERMINE YOUR HEAD SIZE?

Use a soft tape and place the tape firmly around your head. If you have no soft tape, just use a string and measure the string with a ruler.

To determine head circumference, measure around the largest part of the head around where you would like the hat to sit. Sometimes you might have to measure your crown height or length too.

Step 1: Measuring your head around from the forehead to the middle of the crown

Step 2: Measuring your head around from the forehead to the bottom of the crown

Step 3: Measuring your head around from the forehead to the nape (bottom hairline)

Step 4: Take the largest measurement as your head size circumference.

For summer hats, get a hat that is about 1cm bigger than your head size. This will increase air circulation because you may get too hot in warm seasons if a hat is tight. A snug fit is better for cooler seasons.

FACTORS TO CONSIDER FOR A COMFORTABLE-FITTING HAT SIZE

Whether a hat may fit and sit comfortably on your head depends on quite a few factors such as:

Your correct head circumference
Shape and style of the hat
The material of the hat
The stretchiness of the hat
Manufacturer/brand standards
Seasons

CROWN-HEIGHT & CROWN-LENGTH FOR HAT SIZING

Other factors sometimes you might have to take into consideration when deciding whether headwear is going to fit are your "crown-height" (the "sellion-to-Vertex" length) and your "crown-length" (front to nape length), as illustrated below:

In most cases, there is no need to worry too much about your "crown-height" and "crown-length" as the average measurements of these two parts of your head are in the ratio of your head circumference. i.e. the longer your crown-length is, the bigger your head circumference is.

However, we encourage you to get headcovers with deeper/ flatter crowns if your "crown-height" and “crown-length” are out of average proportion to your head circumference.

Here are some interesting facts for your reference.

According to Wikipedia, the measurements of most adult women's "crown-height" (sellion-to-vertex) fall within 9.0cm to 12.20cm, with the average women's measurement being around 10.5cm. The "crown-height" measurement will affect the 'crown-length" i.e. front-to-nape measurement. The higher your crown-height is, the longer is your crown-length.

Based on our limited data, for women with an average head size (56-57cm), the average front-to-nape measurement is about 35cm-37cm. EINSKEY is still accumulating data in this area. Once we have enough data, we will update this blog.

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