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International Ring Size
International Ring Size

International Ring Sizes


International Ring Size Chart


Some reputable jeweller's rings are specified in standard US sizes. View the conversion chart to see how US sizes map to finger circumference, as well as how US sizes convert to Canada, Australia, New Zealand, UK, Ireland, Japan, France, and Germany ring sizes.


Circumference USA & Canada Australia, New Zealand, UK & Ireland France Germany Japan
Inches MM
1.74 44 2 3 F 44 14 4
1.77 14.8 3.25 F-1/2 44.625 14.25 ---
1.79 45.5 3.5 G 45.25 14.5 5
1.82 46.1 3.75 G-1/2 45.875 14.75 6
1.84 46.8 4 H-1/2 46.5 15 7
1.87 47.4 4.25 I 47.125 15.25 ---
1.89 48 4.5 I-1/2 47.75 15.5 8
1.92 48.7 4.75 J 48.375 --- ---
1.94 49.3 5 J-1/2 49 15.75 9
1.97 50 5.25 K 49.625 16 ---
1.99 50.6 5.5 k-1/2 50.25 16.25 10
2.02 51.2 5.75 L 50.875 --- 11
2.04 51.9 6 L-1/2 51.5 16.5 12
2.07 52.5 6.25 M 52.125 16.75 ---
2.09 53.1 6.5 M-1/2 52.75 17 13
2.12 53.8 6.75 N 53.375 --- ---
2.14 54.7 7 O 54 17.25 14
2.17 55.1 7.25 O-1/2 54.625 17.5 ---
2.19 55.7 7.5 P 55.25 17.75 15
2.22 56.3 7.75 P-1/2 55.875 --- ---
2.24 57 8 Q 56.5 18 16
2.27 57.6 8.25 Q-1/2 57.125 18.25 ---
2.29 58.3 8.5 Q-1/2 57.75 18.5 17
2.32 58.9 8.75 R 58.375 18.75 ---
2.34 59.5 9 R-1/2 59 19 18
2.37 60.2 9.25 S 59.625 19.25 ---
2.39 60.8 9.5 S-1/2 60.25 19.5 19
2.42 61.4 9.75 T 60.875 19.75 ---
2.44 62.1 10 T-1/2 61.5 20 20
2.47 62.7 10.25 U 62.125 20.25 21
2.49 63.4 10.5 U-1/2 62.75 20.5 22
2.52 64 10.75 V 63.375 --- ---
2.54 64.6 11 V-1/2 64 20.75 23
2.57 65.3 11.25 W 64.625 --- ---
2.59 65.9 11.5 W-1/2 65.25 21 24
2.62 66.6 11.75 X 65.875 --- ---
2.65 67.2 12 Y 66.5 21.25 25
2.67 67.8 12.25 Y-1/2 67.125 21.5 ---
2.70 68.5 12.5 Z 67.75 21.75 26
2.72 69.1 12.75 Z-1/2 68.375 --- ---
2.75 69.7 13 --- 69 22 27