Helmet Size Conversion Chart
| Helmet Size |
Hat Size |
Head Circumference - Inches |
Head Circumference - Metric |
| 2XS |
6 3/8 - 6 1/2 |
20- 20 1/2 |
51-52 |
| XS |
6 5/8 - 6 3/4 |
20 7/8 - 21 1/4 |
53-54 |
| S |
6 7/8 - 7 |
21 5/8 - 22 |
55-56 |
| M |
7 1/8 - 7 1/4 |
22 1/2 - 22 7/8 |
57-58 |
| L |
7 3/8 - 7 1/2 |
23 1/4 - 23 5/8 |
59-60 |
| XL |
7 5/8 - 7 3/4 |
24 - 24 3/8 |
61-62 |
| 2XL |
7 7/8 - 8 |
24 3/4 - 25 1/4 |
63-64 |
| 3XL |
8 1/8 - 8 1/4 |
25 5/8 - 26 |
65-66 |
| 4XL |
8 3/8 - 8 1/2 |
|
|
| 5XL |
8 3/4 - 8 3/4 |
|
|
| Youth S |
6 1/8 - 6 1/4 |
19 1/4 - 19 3/4 |
49-50 |
| Youth M |
6 3/8 - 6 1/2 |
20 - 20 1/2 |
51-52 |
| Youth L |
6 5/8 - 6 3/4 |
20 7/8 - 21 1/4 |
53-54 |
| Youth S/M |
6 1/8 - 6 1/4 |
19 1/4 - 19 3/4 |
49-50 |
| Youth L/XL |
6 3/8- 6 1/2 |
20 - 20 1/2 |
51-52 |
| Helmet Size |
Hat Size |
Head Circumference - Inches |
Head Circumference - Metric |
| XS |
6 5/8 - 6 3/4 |
20 7/8 - 21 1/4 |
53-54 |
| S |
6 7/8 - 7 |
21 5/8 - 22 |
55-56 |
| M |
7 1/8 - 7 1/4 |
22 3/8 - 22 3/4 |
57-58 |
| L |
7 3/8 - 7 1/2 |
23 1/4 - 23 5/8 |
59-60 |
| XL |
7 5/8 - 7 3/4 |
24 - 24 3/8 |
61-62 |
| 2XL |
7 7/8 - 8 |
24 3/4 - 25 1/4 |
63-64 |
| Youth S/M |
6 1/8 - 6 1/4 |
19 1/4 - 19 3/4 |
49-50 |
| Youth L/XL |
6 3/8- 6 1/2 |
20 - 20 1/2 |
51-52 |
| Helmet Size |
Hat Size |
Head Circumference - Inches |
Head Circumference - Metric |
| XS |
6 5/8 - 6 3/4 |
20 1/2 - 20 7/8 |
52 - 53 |
| S |
6 15/16 - 7 3/16 |
21 1/4 - 21 11/16 |
54 - 55 |
| M |
7 1/4 - 7 3/8 |
22 1/16 - 22 7/16 |
56 - 57 |
| L |
7 1/2 - 7 5/8 |
22 13/16 - 23 1/4 |
58 - 59 |
| XL |
7 3/4 |
23 5/8 - 24 |
60 - 61 |
| 2XL |
7 7/8 |
24 7/16 - 24 13/16 |
62 - 63 |
| 3XL |
8 3/8 |
25 3/16 - 25 5/8 |
64 - 65 |
