Conversion Chart
| HEAD SIZE INCHES | HEAD SIZE CM | HAT SIZE |
|---|---|---|
| 19 ⅝ | 50 | 6 ¼ |
| 20 | 51 | 6 ⅜ |
| 20 ⅜ | 52 | 6 ½ |
| 20 ¾ | 53 | 6 ⅝ |
| 21 ¼ | 54 | 6 ¾ |
| 21 ⅝ | 55 | 6 ⅞ |
| 22 | 56 | 7 |
| 22 ⅜ | 57 | 7 ⅛ |
| 22 ¾ | 58 | 7 ¼ |
| 23 ⅛ | 59 | 7 ⅜ |
| 23 ⅝ | 60 | 7 ½ |
| 24 | 61 | 7 ⅝ |
| 24 ⅜ | 62 | 7 ¾ |
Disclaimer: This conversion chart is a guide only and does not constitute a guarantee as to the fit of the helmet. Some people may have a unique head shape changing what size they need. Some helmets fit different shaped heads better than others.