This is a great guide to finding your hat size, where you’ll learn to take your measurement to find the perfect fit, and also convert between US, UK and French sizes.
Adult hat size chart – men and women
| XS-XL | Inches | Cm | US | UK | France |
|---|---|---|---|---|---|
| XXS | 19 4/8 | 50 | 6 1/4 | 6 1/8 | 1 1/2 |
| XXS | 19 7/8 | 51 | 6 3/8 | 6 1/4 | 2 |
| XXS | 20 2/8 | 52 | 6 1/2 | 6 3/8 | 2 1/2 |
| XS | 20 3/4 | 53 | 6 5/8 | 6 1/2 | 3 |
| XS | 21 1/4 | 54 | 6 3/4 | 6 5/8 | 3 1/2 |
| S | 21 5/8 | 55 | 6 7/8 | 6 3/4 | 4 |
| S | 22 | 56 | 7 | 6 7/8 | 4 1/2 |
| M | 22 1/2 | 57 | 7 1/8 | 7 | 5 |
| M | 22 3/4 | 58 | 7 1/4 | 7 1/8 | 5 1/2 |
| L | 23 1/4 | 59 | 7 3/8 | 7 1/4 | 6 |
| L | 23 5/8 | 60 | 7 1/2 | 7 3/8 | 6 1/2 |
| XL | 24 | 61 | 7 5/8 | 7 1/2 | 7 |
| XL | 24 1/2 | 62 | 7 3/4 | 7 5/8 | 7 1/2 |
| XXL | 24 3/4 | 63 | 7 7/8 | 7 3/4 | 8 |
| XXL | 25 1/4 | 64 | 8 | 7 7/8 | 8 1/2 |
How to measure your hat size
To measure your size before you buy your hat, wrap a tape measure around your head just above your ears and at the center of the forehead. The tape should fit comfortably – not too tight. Round up to the nearest size. You can also use a piece of string, and then measure it with a normal ruler. If you’re not sure about the size – choose the larger size.
This conversion chart is for both men and women – look here for children’s hat sizes.
Please observe that this is only a guide to find your hat size, sizes may vary between different manufacturers.