Ring Size
(US)
Length
(Inches)
Length
(Millimeter)
5
1.943
49
5.5
2
50.3
6
2.045
51.5
6.5
2.10
52.8
7
2.15
54
7.5
2.20
55.3
8
2.25
56.6
8.5
2.30
57.8
9
2.35
59.1
9.5
2.40
60.3
10
2.46
61.6
10.5
2.51
62.8
11
2.56
64.1
11.5
2.61
65.3
12
2.63
66.6
12.5
2.71
67.9
13
2.76
69.1