Inside Diameter (mm) |
Circumference (mm) |
Ring Size |
12.85 |
40.40 |
0.50 |
13.06 |
41.00 |
1 |
13.26 |
41.70 |
1.75 |
13.46 |
42.30 |
2.25 |
13.67 |
42.90 |
3 |
13.87 |
43.60 |
3.50 |
14.07 |
44.20 |
4.25 |
14.27 |
44.80 |
4.75 |
14.48 |
45.50 |
5.50 |
14.68 |
46.10 |
6 |
14.88 |
46.80 |
6.75 |
15.09 |
47.40 |
7.50 |
15.29 |
48.00 |
8 |
15.49 |
48.70 |
8.75 |
15.70 |
49.30 |
9.25 |
15.90 |
50.00 |
10 |
16.10 |
50.60 |
10.50 |
16.31 |
51.20 |
11.25 |
16.51 |
51.90 |
11.75 |
16.71 |
52.50 |
12.50 |
16.92 |
53.10 |
13.25 |
17.12 |
53.80 |
13.75 |
17.32 |
54.40 |
14.50 |
17.53 |
55.10 |
15 |
17.73 |
55.70 |
15.75 |
17.93 |
56.30 |
16.25 |
18.14 |
57.00 |
17 |
18.34 |
57.60 |
17.50 |
18.54 |
58.30 |
18.25 |
18.75 |
58.90 |
19 |
18.95 |
59.50 |
19.50 |
19.15 |
60.20 |
20.25 |
19.35 |
60.80 |
20.75 |
19.56 |
61.40 |
21.50 |
19.76 |
62.10 |
22 |
19.96 |
62.70 |
22.75 |
20.17 |
63.40 |
23.25 |
20.37 |
64.00 |
24 |
20.57 |
64.60 |
24.75 |
20.78 |
65.30 |
25.25 |
20.98 |
65.90 |
26 |
21.18 |
66.60 |
26.50 |
21.39 |
67.20 |
27.25 |
21.59 |
67.80 |
27.75 |
21.79 |
68.50 |
28.50 |
22.00 |
69.10 |
29 |
22.20 |
69.70 |
29.75 |
22.40 |
70.40 |
30.50 |
22.61 |
71.00 |
31 |
22.81 |
71.70 |
31.75 |
23.01 |
72.30 |
32.25 |
23.22 |
72.90 |
33 |
23.42 |
73.60 |
33.50 |
23.62 |
74.20 |
34.25 |
23.83 |
74.80 |
34.75 |
24.03 |
75.50 |
35.50 |
24.23 |
76.10 |
36.25 |
24.43 |
76.80 |
36.75 |
24.64 |
77.40 |
37.50 |
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