To measure your correct helmet size, measure the circumference of your head, like a headband, one inch above the eyebrows, above the ears. Match inch measurement to chart. If between sizes, choose the next larger size. Helmet should be snug but not overly tight.
| HJC Helmets |
| Head Measurement |
Centimeter |
Hat Size |
Helmet Size |
| 19-1/4" - 19-3/4" |
49 - 50 |
6-1/8" - 6-1/4" |
Youth S/M |
| 20" - 20-1/2" |
51 - 52 |
6-3/8" - 6-1/2" |
Youth L/XL |
| 20" - 20-1/2" |
51 - 52 |
6-3/8" - 6-1/2" |
XXS |
| 20-7/8" - 21-1/4" |
53 - 54 |
6-5/8" - 6-3/4" |
XS |
| 21-5/8" - 22" |
55 - 56 |
6-7/8" - 7" |
S |
| 22-1/2" - 22-7/8" |
57 - 58 |
7-1/8" - 7-1/4" |
M |
| 23-1/4" - 23 5/8" |
59 - 60 |
7-3/8" - 7-1/2" |
L |
| 24" - 24-3/8" |
61 - 62 |
7-5/8" - 7-3/4" |
XL |
| 24-3/4" - 25-1/4" |
63 - 64 |
7-7/8" - 8" |
2XL |
| 25-5/8" - 26" |
65 - 66 |
8-1/8" - 8-1/4" |
3XL |
|