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International Sizing Chart
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| Ring Size Equivalents
Finger Sizes
If you wish to order a ring from us, please use this chart to determine your ring size in USA sizes that are listed on the Diamond Nexus Labs website.
Diameter = Internal diameter in millimeters.
Circumference = Internal circumference in millimeters. |
U.S. &
Canada |
Inside
Diameter |
Inside
Circumference |
Great
Britain |
France |
Germany |
Japan |
Switzerland |
3-1/2 |
... |
... |
... |
... |
14-1/2 |
... |
... |
3-3/4 |
... |
... |
H |
46-1/2 |
... |
6-1/2 |
6-1/2 |
4 |
16mm |
50mm |
H-1/2 |
... |
15 |
7 |
... |
4-1/4 |
... |
... |
I |
47-3/4 |
... |
... |
7-3/4 |
4-1/2 |
... |
... |
I-1/2 |
... |
15-1/4 |
8 |
... |
4-3/4 |
... |
|
J |
49 |
... |
... |
9 |
5 |
17mm |
53mm |
J-1/2 |
... |
15-3/4 |
9 |
... |
5-1/4 |
... |
... |
K |
50 |
... |
... |
10 |
5-1/2 |
... |
... |
L |
51-3/4 |
16 |
... |
11-3/4 |
5-3/4 |
... |
... |
L-1/2 |
... |
... |
11 |
... |
6 |
17.5mm |
55mm |
M |
52-3/4 |
16-1/2 |
12 |
12-3/4 |
6-1/2 |
... |
... |
N |
54 |
17 |
13 |
14 |
7 |
18mm |
57mm |
O |
55-1/4 |
17-1/4 |
14 |
15-1/4 |
7-1/2 |
... |
... |
P |
56-1/2 |
17-3/4 |
15 |
16-1/2 |
8 |
19mm |
60mm |
Q |
57-3/4 |
18 |
16 |
17-3/4 |
8-1/2 |
... |
... |
... |
... |
18-1/2 |
17 |
... |
8-3/4 |
... |
... |
R |
59 |
... |
... |
19 |
9 |
20mm |
63mm |
... |
... |
19 |
18 |
... |
9-1/4 |
... |
... |
S |
60-1/4 |
... |
... |
20-1/4 |
9-1/2 |
... |
... |
... |
... |
19-1/2 |
19 |
... |
9-3/4 |
... |
... |
T |
61-1/2 |
... |
... |
21-1/2 |
10 |
21mm |
66mm |
T-1/2 |
... |
20 |
20 |
... |
10-1/4 |
... |
... |
U |
62-3/4 |
... |
21 |
22-3/4 |
10-1/2 |
... |
... |
U-1/2 |
... |
20-1/4 |
22 |
... |
10-3/4 |
... |
... |
V |
63-3/4 |
... |
... |
23-3/4 |
11 |
21.5mm |
68mm |
V-1/2 |
... |
20-3/4 |
23 |
... |
11-1/4 |
... |
... |
W |
65 |
... |
... |
25 |
11-1/2 |
... |
... |
... |
... |
21 |
24 |
... |
11-3/4 |
... |
... |
X |
66-1/4 |
... |
... |
26-1/4 |
12 |
22.5mm |
71mm |
Y |
67-1/2 |
21-1/4 |
25 |
27-1/2 |
12-1/2 |
... |
... |
Z |
68-3/4 |
21-3/4 |
26 |
28-3/4 |
13 |
23mm |
73mm |
... |
... |
22 |
27 |
... |
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