Ring Size Chart

United States & Canada
UK, Europe and Australia
CN/SG/JP
Switzerland
 Circumference(mm)
4
H
7
47
4.5
I
8
48
4.75
J
9
49
5
0.5J
9
49.3
5.25
K
10
50
5.5
0.5K
10
50.9
6
0.5L
11
12.75
51.8
6.25
M
12
53
6.5
0.5M
13
14
53.5
7
0.5N
14
15.25
54.4
7.5
0.5O
15
16.5
56.2
8
0.5P
16
17.75
56.9
8.5
0.5Q
17
58.4
9
0.5R
18
59.5
9.5
0.5S
19
61.6
10
0.5T
20
62.1
10.25
U
21
63
10.5
0.5U
22
22.75
63.77
11
0.5V
23
64.6
11.5
0.5W
24
66
12
0.4X
25
27.5
67.2