|
International Ring Size Chart
|
|
Japan
|
Size
(Inches)
|
Diameter
(Inches)
|
Size
(mm)
|
Diameter
(mm)
|
USA and
CA
|
Great
Britain
|
Germany
|
Switzerland
|
France
|
|
8
|
1.88
|
0.60
|
47.63
|
15.27
|
4 1/2
|
I-½
|
15 1/2
|
7 3/4
|
47 3/4
|
|
9
|
1.94
|
0.61
|
49.21
|
15.70
|
5
|
J-½
|
15 3/4
|
9
|
49
|
|
11
|
2.00
|
0.63
|
50.80
|
16.10
|
5 3/4
|
L
|
---
|
10 7/8
|
50 7/8
|
|
12
|
2.06
|
0.64
|
52.39
|
16.51
|
6
|
L-½
|
16 1/2
|
11 1/2
|
51 1/2
|
|
13
|
2.13
|
0.66
|
53.98
|
16.92
|
6 1/2
|
M-½
|
17
|
12 3/4
|
52 3/4
|
|
14
|
2.19
|
0.68
|
55.56
|
17.35
|
7
|
O
|
17 1/4
|
14
|
54
|
|
15
|
2.25
|
0.69
|
57.15
|
17.75
|
7 1/2
|
P
|
17 3/4
|
15 1/4
|
55 1/4
|
|
16
|
2.31
|
0.71
|
58.74
|
18.19
|
8
|
Q
|
18
|
16 1/2
|
56 1/2
|
|
17
|
2.38
|
0.72
|
60.33
|
18.53
|
8 1/2
|
R
|
18 1/2
|
17 3/4
|
57 3/4
|
|
18
|
2.44
|
0.74
|
61.91
|
18.89
|
9
|
S
|
19
|
19
|
59
|
|
19
|
2.50
|
0.76
|
63.50
|
19.41
|
9 1/2
|
---
|
19 1/2
|
20 1/4
|
60 1/4
|
|
20
|
2.56
|
0.77
|
65.09
|
19.84
|
10
|
T-½
|
20
|
21 1/2
|
61 1/2
|
|
22
|
2.63
|
0.79
|
66.68
|
20.20
|
10 1/2
|
U-½
|
20 1/2
|
22 3/4
|
62 3/4
|
|
23
|
2.69
|
0.81
|
68.26
|
20.68
|
11
|
V-½
|
20 3/4
|
24
|
64
|
|
24
|
2.75
|
0.82
|
69.85
|
21.08
|
11 1/2
|
W-½
|
21
|
25 1/4
|
65 1/4
|
|
25
|
2.81
|
0.84
|
71.44
|
21.49
|
12
|
Y
|
21 1/4
|
26 1/2
|
66 1/2
|
|
26
|
2.88
|
0.85
|
73.03
|
21.89
|
12 1/2
|
Z
|
21 3/4
|
27 3/4
|
67 3/4
|
|
27
|
2.94
|
0.87
|
74.61
|
22.33
|
13
|
---
|
22
|
29
|
69
|
* Rings' Sizes on 316Steel.com are calibrated by Japanese scale. This is the industry standard for measuring stainless steel rings.
* All rings' sizes are approximate. Actual sizes may slightly vary.
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