Because sizing and cut will vary between brands, please use this chart as a general guide.
US |
IT |
FR |
UK/AU |
JP |
DIAM. (mm) |
CIRC. (mm) |
3 |
4 |
44 |
F |
4 |
14.05 |
44 |
4 |
6.75 |
47 |
H 1/2 |
7 |
14.86 |
46.5 |
5 |
9.5 |
50 |
J 1/2 |
9 |
15.7 |
49.0 |
6 |
11.5 |
52.75 |
M |
12 |
16.5 |
51.5 |
7 |
14.5 |
55.25 |
O |
14 |
17.3 |
54 |
8 |
17 |
57.75 |
Q |
16 |
18.2 |
56.6 |
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