Size Chart


Conversion Chart for Ring Sizes

Please find below a chart to determine your ring size.
The sizes highlighted in red are the rings available from Rings of Steel.
Please refer back to each ring design to determine available sizes.

Inside Diameter
(mm)
Inside Circumference
(mm)
United States Australia
15.49 48.7   J
15.7 49.3 5 5
15.9 50   K
16.1 50.6
16.31 51.2   L
16.51 51.9 6 6
16.71 52.5   M
16.92 53.1
17.12 53.8   N
17.32 54.4 7 7
17.53 55.1   O
17.73 55.7
17.93 56.3   P
18.14 57 8 8
18.34 57.6   Q
18.54 58.3  
18.75 58.9   R
18.95 59.5 9 9
19.15 60.2   S
19.35 60.8  
19.56 61.4   T
19.76 62.1 10 10
19.96 62.7   10¼ U
20.17 63.4   10½
20.37 64   10¾ V
20.57 64.6 11 11
20.78 65.3   11¼ W
20.98 65.9   11½
21.18 66.6   11¾ X
21.39 67.2 12 12
22.2 69.7 13 13  
23.01 72.3 14 14 Z3
23.83 74.8 15 15