Hat Size Converter
Convert head circumference measurements to US, UK, and EU hat sizes in inches or centimeters.
Hat Size
Hat sizes are based on head circumference measured just above the ears and eyebrows.
Unit conversions:
- 1 inch = 2.54 cm
- 1 cm = 0.394 inches
Hat size chart:
| Circumference (in) | Circumference (cm) | US/UK Size | EU Size |
|---|---|---|---|
| 20⅞ | 53 | 6⅝ | 53 |
| 21¼ | 54 | 6¾ | 54 |
| 21⅝ | 55 | 6⅞ | 55 |
| 22 | 56 | 7 | 56 |
| 22⅜ | 57 | 7⅛ | 57 |
| 22¾ | 58 | 7¼ | 58 |
| 23⅛ | 59 | 7⅜ | 59 |
| 23½ | 60 | 7½ | 60 |
| 23⅞ | 61 | 7⅝ | 61 |
| 24¼ | 62 | 7¾ | 62 |
| 24⅝ | 63 | 7⅞ | 63 |
| 25 | 64 | 8 | 64 |
How to measure: Wrap a flexible tape measure around your head about 1 inch (2.5 cm) above your ears and eyebrows. Keep the tape level and snug but not tight.