Hat size is based on the circumference of the head. In order to determine your proper hat size, you must take a measurement of your head.
Using a tape measure, measure your head about one-half inch above your eyebrows where your hat will rest. Be certain that the tape measure is straight, not twisted. Alternatively, you can use piece of string to measure your head, and then measure the length of the string with a ruler. If you are not certain about size, or are between sizes, buy the larger size.
Use the chart below to determine your hat size based on the measurement you take.
Determine Hat Size
Below is the hat size from our factory. It is known that different suppliers do in fact follow different sizing metrics. So, the chart, although universal, may vary from one hat maker to another. Despite that, we decided to take this a step further and offer the closest thing to a universal metrics system that caters to both men's hat size and women's hat size.
| Generic hat size | US hat size | Head size in inches | Metric size |
|---|---|---|---|
| XS | 6 5/8 | 20 3/4 | 53 |
| Small | 6 3/4 | 21 | 54 |
| Small | 6 7/8 | 21 1/2 | 55 |
| Medium | 7 | 22 | 56 |
| Medium | 7 1/8 | 22 1/2 | 57 |
| Large | 7 1/4 | 22 3/4 | 58 |
| Large | 7 3/8 | 23 | 59 |
| Extra large | 7 1/2 | 23 1/2 | 60 |
| Extra large | 7 5/8 | 24 | 61 |
| XXL | 7 3/4 | 24 3/8 | 62 |
| XXL | 7 7/8 | 24 7/8 | 63 |
| XXXL | 8 | 25 1/8 | 64 |
| XXXL | 8 1/8 | 26 1/2 | 65 |
