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Size guide

Find your Ring Size with this tool :

Ring size Tool

Ring Size Guide :

Inside Diameter 
Inside Circumference
Sizes
MM
Inches
MM
Inches
British & Australian
 US & Canada
French & Russian
German
Japanese
Swiss
17.35
0.683
54.51
2.15
O
7
55 1/4
17 1/4
14
15 1/4
17.45
0.687
54.82
2.16
O 1/2
7 1/4
-
-
-
-
17.75
0.699
55.76
2.20
P
7 1/2
56 1/2
17 3/4
15
16 1/2
17.97
0.707
56.45
2.22
P 1/2
7 3/4
-
-
-
-
18.19
0.716
57.15
2.25
Q
8
57 3/4
18
16
17 3/4
18.35
0.722
57.65
2.27
Q 1/2
8 1/4
-
-
-
-
18.53
0.729
58.21
2.29
Q 3/4
8 1/2
-
18 1/2
17
-
18.61
0.733
58.47
2.30
R
8 5/8
59
-
-
19
18.69
0.736
58.72
2.31
R 1/4
8 3/4
-
-
-
-
18.80
0.740
59.06
2.32
R 1/2
8 7/8
-
-
-
-
18.89
0.748
59.34
2.35
R 3/4
9
-
19
18
-
19.10
0.752
60.00
2.36
S
9 1/8
60 1/4
-
-
20 1/4
19.22
0.757
60.38
2.38
S 1/4
9 1/4
-
-
-
-
19.31
0.760
60.66
2.39
S 1/2
9 3/8
-
-
-
-
19.41
0.764
60.98
2.40
S 3/4
9 1/2
-
19 1/2
19
-
19.51
0.768
61.29
2.41
T
9 5/8
61 1/2
-
-
21 1/2
19.62
0.772
61.64
2.43
T 1/4
9 3/4
-
-
-
-
19.84
0.781
62.33
2.45
T 1/2
10
-
20
20
-
20.02
0.788
62.89
2.48
U
10 1/4
62 3/4
-
21
22 3/4
20.20
0.797
63.46
2.50
U 1/2
10 1/2
-
20 1/4
22
-
20.32
0.800
63.84
2.51
V
10 5/8
63
-
-
23 3/4
20.44
0.805
64.21
2.53
V 1/4
10 3/4
-
-
-
-
20.68
0.814
64.97
2.56
V 1/2
11
-
20 3/4
23
-
20.76
0.817
65.22
2.57
W
11 1/8
65
-
-
25
20.85
0.821
65.50
2.58
W 1/4
11 1/4
-
-
-
-
20.94
0.824
65.78
2.59
W 1/2
11 3/8
-
-
-
-
21.08
0.830
66.22
2.61
W 3/4
11 1/2
-
21
24
-
21.18
0.834
66.54
2.62
X
11 5/8
66 1/4
-
-
26 1/4
21.24
0.836
66.73
2.63
X 1/4
11 3/4
-
-
-
-
21.30
0.839
66.92
2.64
X 1/2
11 7/8
-
-
-
-
21.49
0.846
67.51
2.66
Y
12
67 1/2
21 1/4
25
27 1/2
21.69
0.854
68.14
2.68
Y 1/2
12 1/4
-
-
-
-
21.89
0.862
68.77
2.71
Z
12 1/2
68 3/4
21 3/4
26
28 3/4
22.10
0.870
69.43
2.73
Z +1/2
12 3/4
-
-
-
-
22.33
0.879
70.15
2.76
Z+1
13
-
22
27
-
22.60
0.890
71.00
2.80
Z+1.5
13.5
-

 

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