Ring Size Chart 

Inside Diameter (mm) Inside Circumference (mm) US/Canada/Mexico UK/Australia/Ireland/New Zealand/South Africa France Germany/Russia/Ukraine/Asia India/China/Japan/South America/Turkey/Israel Italy/Spain/Netherlands/Switzerland
14.1 44.2 3 F 44 14 4 4
14.3 44.8 3.25 F ½ 44.625 14.25 — 4.625
14.5 45.5 3.5 G 45.25 14.5 5 5.25
14.7 46.1 3.75 G ½ 45.875 14.75 6 5.875
14.9 46.8 4 H 46.5 15 7 6.5
15.1 47.4 4.25 H ½ 47.125 15.25 — 7.125
15.3 48 4.5 I 47.75 15.5 8 7.75
15.5 48.7 4.75 J 48.375 — — 8.375
15.7 49.3 5 J ½ 49 15.75 9 9
15.9 50 5.25 K 49.625 16 — 9.625
16.1 50.6 5.5 K ½ 50.25 16.25 10 10.25
16.3 51.2 5.75 L 50.875 — 11 10.875
16.5 51.9 6 L ½ 51.5 16.5 12 11.5
16.7 52.5 6.25 M 52.125 16.75 — 12.125
16.9 53.1 6.5 M ½ 52.75 17 13 12.75
17.1 53.8 6.75 N 53.375 — — 13.375
17.3 54.4 7 N ½ 54 17.25 14 14
17.5 55.1 7.25 O 54.625 17.5 — 14.625
17.7 55.7 7.5 O ½ 55.25 17.75 15 15.25
17.9 56.3 7.75 P 55.875 — — 15.875
18.1 57 8 P ½ 56.5 18 16 16.5
18.3 57.6 8.25 Q 57.125 18.25 — 17.125
18.6 58.3 8.5 Q ½ 57.75 18.5 17 17.75
18.7 58.9 8.75 R 58.375 18.75 — 18.375
18.9 59.5 9 R ½ 59 19 18 19
19.2 60.2 9.25 S 59.625 19.25 — 19.625
19.4 60.8 9.5 S ½ 60.25 19.5 19 20.25
19.5 61.4 9.75 T 60.875 19.75 — 20.875
19.8 62.1 10 T ½ 61.5 20 20 21.25
20.0 62.7 10.25 U 62.125 20.25 21 22.125
20.2 63.4 10.5 U ½ 62.75 20.5 22 22.75
20.4 64 10.75 V 63.375 — — 23.375
20.6 64.6 11 V ½ 64 20.75 23 24
20.8 65.3 11.25 W 64.625 — — 24.625
21.0 65.9 11.5 W ½ 65.25 21 24 25.25
21.2 66.6 11.75 X 65.875 — — 25.875
21.4 67.2 12 X ½ 66.5 21.25 25 26.5
21.7 68.1 12.25 Y 67.125 21.5 — 27.125
21.8 68.5 12.5 Z 67.75 21.75 26 27.75
22.0 69.1 12.75 Z ½ 68.375 — — 28.375
22.2 69.7 13 — 69 22 27 29