Skip to content
Rings size chart - centimetres
Size: |
Inside diameter: |
Inside circumference: |
USA/Canada sizing |
UK/Ireland/Australia sizing |
|
(mm) |
(mm) |
|
|
11,25 |
16,3 |
51,10 |
5 3/4 |
L |
11,75 |
16,51 |
51,9 |
6 |
L 1/2 |
12 1/2 |
16,7 |
52,5 |
6 1/4 |
M |
13 |
16.9 |
53 |
6 1/2 |
M 1/2 |
14 1/3 |
17,3 |
54,4 |
7 |
N 1/2 |
16,25 |
17,93 |
56,3 |
7 3/4 |
P |
17 1/2 |
18,3 |
57,5 |
8 1/3 |
Q |
18 |
18.5 |
58 |
8 1/2 |
Q 1/2 |
18,8 |
18,7 |
58,8 |
8 3/4 |
R |
19,5 |
18,95 |
59,5 |
9 |
R 1/2 |
20 |
19,1 |
60 |
9 1/4 |
S |
21 |
19,4 |
61 |
9 1/2 |
S 3/4 |
22 |
19,76 |
62 |
9 7/8 |
T 1/2 |
22 1/2 |
19,9 |
62,5 |
10 1/4 |
U |
23 |
20,1 |
63,1 |
10 3/8 |
U 1/2 |
23 3/4 |
20,3 |
63,8 |
10 5/8 |
V |
24 1/4 |
20,5 |
64,4 |
10 7/8 |
V 1/2 |
24 3/4 |
20,6 |
64,7 |
11 |
V 3/4 |
26 |
21 |
66 |
11 1/2 |
W 3/4 |
26 1/4 |
21,1 |
66,2 |
11 5/8 |
X |
27 |
21,30 |
67 |
11 7/8 |
X 1/2 |
27 1/8 |
21,4 |
67,2 |
12 |
X 3/4 |
28 3/4 |
21,9 |
68,7 |
12 5/8 |
Z |
29 |
22 |
69 |
12 6/8 |
Z 1/4 |
29 1/3 |
22,10 |
69,4 |
12 7/8 |
Z 1/2 |
29,5 |
22,5 |
70,5 |
13 3/8 |
Z + 1/2 |
Z++ |
22,7 |
71,3 |
13 1/2 |
Z++ |
32,5 |
22,9 |
72 |
13 7/8 |
Z ++ 1/2 |
34,75 |
23,1 |
72,5 |
14 1/4 |
Z+++ |
Z+3 1/2 |
23,2 |
73 |
14 1/4 |
Z+3 1/2 |
Z++++ |
23,5 |
73,9 |
14 5/8 |
Z++++ |
Z++++.9 |
23,83 |
|
|
Z++++.9 |
- Choosing a selection results in a full page refresh.