how to measure ring size

Ring Sizing Chart 

US & Canada  UK, Europe & Australia  CN/SG/JP  Hong Kong Switzerland  Circumference (mm)
4 H 7 9 46.75
4.25 0.5H 7.75 47.25
4.5 I 8 10 48
4.75 J 9 48.75
5 0.5J 9 11 49.25
5.25 K 10 50
5.5 0.5K 10 12 50.5
5.75 L 11.75 51.25
6 0.5L 11 13 12.75 51.75
6.25 M 12 52.5
6.5 0.5M 13 14.5 14 53.25
6.75 N 53.75
7 0.5N 14 16 15.25 54.5
7.25 O 55
7.5 0.5O 15 17 16.5 55.75
7.75 P 56.5
8 0.5P 16 17.75 57
8.25 18 57.75
8.5 0.5Q 17 19 58.25
8.75 R 19 59
9 0.5R 18 20.5 59.75
9.25 S 20.25 60.25
9.5 0.5S 19 22 61
9.75 T 21.5 61.5
10 0.5T 20 23 62.25
10.25 U 21 63
10.5 0.5U 22 24 22.75 63.5
10.75 V 64.25
11 0.5V 23 25 64.75
11.25 W 25 65.5
11.5 0.5W 24 26 66
11.75 X 66.75
12 0.4X 25 27.75 27.5 67.5

 

*These charts are for reference only. Fit may vary depending on the construction and materials.

*If the ring is resizable, it can fit the ring size from 5 to 9.5.