How to measure the size of a hat?

Jul 02, 2025

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Many people always worry about the size not fitting when buying a hat, because it is either too tight or easy to fall off. In fact, measuring the size of a hat is very simple. You can do it in a few minutes with a tape measure. Today, I will teach you how to measure the size of a hat step by step, so that you will never make mistakes when buying a hat again.

 

1. Prepare tools

First, prepare these things:

A tape measure

A mirror

Paper and pen

 

2. Measure the head circumference

The size of the hat mainly depends on the head circumference. Here is the simplest measurement method:

Find the position

Wrap the tape measure around your head, passing through the widest part of the forehead and the most convex part of the back of the head. This is your head circumference. It is usually about 1-2 cm above the eyebrows.

Keep it level

When measuring, the tape measure should be level, not high in front and low in the back, so that the hat will not be crooked when worn.

Moderate tightness

The tape measure should be close to the head, but not too tight or loose.

Reading

Look at the number on the tape measure, the unit is centimeters. The average head circumference of an adult is about 54-60 cm.

For example: you measure 58 cm, which is your head circumference.

 

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3. Compare the size chart

The sizes of hats from different brands may be different. Here is a comparison chart of common hat sizes (for reference only):

Head circumference

Size

54-55

S

56-57

M

58-59

L

60-61

XL

 

4. Tips

If you are between two sizes: it is recommended to choose a larger size, which is more comfortable to wear.

Wearing a hairpin or a headscarf: take these into account and wear them together when measuring.

Different styles: baseball caps, bucket hats, top hats, different shades, and slightly different sizes, it is best to look at the specific style recommendations.

 

With an accurate head circumference, you no longer have to worry about buying a hat that is not suitable. I hope this article can help you choose a suitable and favorite hat!