Inside Diameter MM Inside Diameter Inches USA Canada Mexico Ring Size UK Ireland Australia New Zealand South Africa Ring Size

Circumference (MM)
Germany France Ring Size

Spain Italy Ring Size Japan China India South America Ring Size
15 mm 0.59 4 H 46.8 6,5 7
15.3 mm 0.60 4.5 I 48 8 8
15.6 mm 0.62 5 J 49.3 9,5 9
16.2 mm 0.63 5.5 K 50.6 10,5 10
16.6 mm 0.65 6 L 51.9 12 11
16.9 mm 0.67 6.5 M 53.1 13,5 13
17.2 mm 0.68 7 N 54.4 14,5 14
17.8 mm 0.70 7.5 O 55.7 16 15
18.1 mm 0.71 8 P 57 17 16
18.5 mm 0.73 8.5 Q 58.3 18,5 17
19.1 mm 0.75 9 R 59.5 20 18
19.4 mm 0.76 9.5 S 60.8 21 19
19.7 mm 0.78 10 T 62.1 22,5 20
20.4 mm 0.79 10.5 U 63.4 23,5 22
20.7 mm 0.81 11 V 64.6 25 23
21.0 mm 0.83 11.5 W 65.9 26 24
21.6 mm 0.84 12 X 67.2 27,5 25
22.0 mm 0.86 12.5 Y 68.5 29 26
22.3 mm 0.87 13 Z 69.7 30 27
22.9 mm 0.89 13.5 Z+2 71 32
23.2 mm 0.91 14 Z+3 72.3 33
23.6 mm 0.92 14.5 Z+4 73.6 34,5
24.0 mm 0.94 15 Z+5 74.8 35