Ring Size Conversion
|
Circumference (mm) |
Diameter (mm) |
USA / Canada |
UK / Australia |
Asia |
Switzerland |
|---|---|---|---|---|---|
|
44.2 |
14.1 |
3 |
F |
4 |
4 |
|
44.8 |
14.3 |
F-1/2 |
5 |
5-1/4 |
|
|
45.5 |
14.5 |
3-1/2 |
G |
||
|
46.1 |
14.7 |
G-1/2 |
6 |
6-1/2 |
|
|
46.8 |
14.9 |
4 |
H |
7 |
|
|
47.4 |
15.1 |
H-1/2 |
7-3/4 |
||
|
48.0 |
15.3 |
4-1/2 |
I |
8 |
|
|
48.7 |
15.5 |
J |
9 |
||
|
49.3 |
15.7 |
5 |
J-1/2 |
9 |
|
|
50.0 |
15.9 |
K |
10 |
||
|
50.6 |
16.1 |
5-1/2 |
K-1/2 |
10 |
|
|
51.2 |
16.3 |
L |
11-3/4 |
||
|
51.9 |
16.5 |
6 |
L-1/2 |
11 |
12-3/4 |
|
52.5 |
16.7 |
M |
12 |
||
|
53.1 |
16.9 |
6-1/2 |
M-1/2 |
13 |
14 |
|
53.8 |
17.1 |
N |
|||
|
54.4 |
17.3 |
7 |
N-1/2 |
14 |
15-1/4 |
|
55.1 |
17.5 |
O |
|||
|
55.7 |
17.7 |
7-1/2 |
O-1/2 |
15 |
16-1/2 |
|
56.3 |
17.9 |
P |
|||
|
57.0 |
18.1 |
8 |
P-1/2 |
16 |
17-3/4 |
|
57.6 |
18.3 |
Q |
|||
|
58.3 |
18.5 |
8-1/2 |
Q-1/2 |
17 |
|
|
58.9 |
18.8 |
R |
19 |
||
|
59.5 |
19.0 |
9 |
R-1/2 |
18 |
|
|
60.2 |
19.2 |
S |
20-1/4 |
||
|
60.8 |
19.4 |
9-1/2 |
S-1/2 |
19 |
|
|
61.4 |
19.6 |
T |
21-1/2 |
||
|
62.1 |
19.8 |
10 |
T-1/2 |
20 |
|
|
62.7 |
20.0 |
U |
21 |
||
|
63.4 |
20.2 |
10-1/2 |
U-1/2 |
22 |
22-3/4 |
|
64.0 |
20.4 |
V |
|||
|
64.6 |
20.6 |
11 |
V-1/2 |
23 |
|
|
65.3 |
20.8 |
W |
25 |
||
|
65.9 |
21.0 |
11-1/2 |
W-1/2 |
24 |
|
|
66.6 |
21.2 |
X |
|||
|
67.2 |
21.4 |
12 |
X-1/2 |
25 |
27-1/2 |
|
67.8 |
21.6 |
Y |
|||
|
68.5 |
21.8 |
12-1/2 |
Z |
26 |
28-3/4 |
|
69.1 |
22.0 |
Z-1/2 |
|||
|
69.7 |
22.2 |
13 |
27 |
||
|
70.4 |
22.4 |
Z + 1 |
|||
|
71.0 |
22.6 |
13-1/2 |