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https://www.claudiabradby.com/ring-size-guide
Customer Service 01264 860598

Ring Size Guide

Inside Diameter (inches)
Inside Diameter (mm)
Inside Circumference (inches)
Inside Circumference (mm)
Ring Size UK
Ring Size USA
Ring Size Europe
0.59
15.2
1.86
47.4
I
47½
0.60
15.4
1.89
48.0
48
0.61
15.6
1.92
48.7
J
48½
0.62
15.8
1.94
49.3
5
49
0.63
16.0
1.97
50.0
K
50
0.63
16.1
1.99
50.6
50½
0.64
16.4
2.02
51.2
L
51
0.65
16.6
2.04
51.9
6
52
0.66
16.8
2.07
52.5
M
52½
0.67
17.0
2.09
53.1
53
0.67
17.2
2.12
53.8
N
53½
0.68
17.4
2.14
54.4
7
54
0.69
17.6
2.17
55.1
O
55
0.70
17.8
2.19
55.7
55½
0.71
18.0
2.22
56.3
P
56
0.71
18.2
2.24
57.0
8
57
0.72
18.4
2.27
57.6
Q
57½
0.73
18.6
2.29
58.3
58
0.74
18.8
2.32
58.9
R
59

The National Association of Jewellers Approved Supplied to the Company of Master Jewellers