Ring Size guide

Ring size Finger Circumference (mm)
IT FR UK US Inner Circumference (mm) Internal diameter (mm)
1 41 C 2 40,50-41,40 13.00-13,20
2 42 D 2 41,80-42,40 13,30-13,50
3 43 E 2,5 42,70-43,30 13,60-13,70
4 44 F 3 43,60-44,30 13,80-14,10
5 45 G 3 44,60-45,20 14,20-14,40
6 46 H 4 45,60-46,20 14,50-14,70
7 47 H + 1/2 4 46,50-47,40 14,80-15,10
8 48 I 4 47,80-48,40 15,20-15,40
9 49 J 5 48,70-49,30 15,50-15,70
10 50 K 5 49,60-50,30 15,80-16,00
11 51 L 5,5 50,60-51,20 16,10-16,30
12 52 L + 1/2 6 51,50-52,20 16,40-16,60
13 53 M 6,5 52,50-53,40 16,70-17,00
14 54 N 7 53,70-54,30 17,10-17,30
15 55 O 7 54,70-55,30 17,40-17,60
16 56 P 8 55,60-56,20 17,70-17,90
17 57 P + 1/2 8 56,50-57,20 18,00-18,20
18 58 Q + 1/2 8 57,50-58,40 18,30-18,60
19 59 R 9 58,70-59,40 18,70-18,90
20 60 S 9 59,70-60,30 19,00-19,20
21 61 T 9,5 60,60-61,30 19,30-19,50
22 62 U 10 61,60-62,20 19,60-19,80
23 63 U + 1/2 10 62,50-63,10 19,90-20,10
24 64 V 11 63,50-64,40 20,20-20,50
25 65 W 11 64,70-65,30 20,60-20,80
26 66 X 11 65,70-66,30 20,90-21,10
27 67 Y 12 66,30-67,50 21,20-21,50
28 68 Z 12 67,90-68,50 21,60-21,80
29 69 Z + 1/2 12,5 68,80-69,40 21,90-22,10
30 70 1 13 69,70-70,40 22,20-22,40