Ring Size Chart

US/CA UK/AU FR/DE IT/ES INSIED DIAMETE(mm) INSIED CIRCUMFERENCE (mm) INSIED DIAMETE(inches) INSIED CIRCUMFERENCE (inches)
3 F 44 4.25 14.1 44.2 0.6 1.7
3.5 G 45.5 5.5 14.5 45.5 0.6 1.8
4 H 47 6.75 14.9 46.8 0.6 1.8
4.5 I 48 8 15.3 48 0.6 1.9
5 J-½ 50 9.25 15.7 49.3 0.6 1.9
5.5 K-½ 51 10.5 16.1 50.6 0.6 2
6 L-½ 52 11.75 16.5 51.9 0.6 2
6.5 M-½ 53 13.25 16.9 53.1 0.7 2.1
7 N-½ 54 14.5 17.3 54.4 0.7 2.1
7.5 O-½ 56 15.75 17.7 55.7 0.7 2.2
8 P-½ 57 17 18.1 57 0.7 2.2
8.5 Q-½ 58 18.25 18.5 58.3 0.7 2.3
9 R-½ 60 19.5 19 59.5 0.7 2.3
9.5 S-½ 61 20.75 19.4 60.8 0.8 2.4
10 T-½ 62 22 19.8 62.1 0.8 2.4
10.5 U-½ 63 23.25 20.2 63.4 0.8 2.5
11 V-½ 64 24.75 20.6 64.6 0.8 2.5
11.5 W-½ 66 26 21 65.9 0.8 2.6
12 X-½ 67 27.25 21.4 67.2 0.8 2.6
12.5 Z 68 28.5 21.8 68.5 0.9 2.7
13 Z+1 70 29.75 22.2 69.7 0.9 2.7
13.5 Z+1.5 71 31 22.6 71 0.9 2.8
14 Z+2 72 32.5 23 72.3 0.9 2.8
14.5 Z+2.5 73.5 33.5 23.4 73.5 0.9 2.9
15 Z+3 75 34.75 23.8 74.8 0.9 2.9