Ring Size Chart

 US / CAN UK / AUS Inside Diameter 
1.5 C 12.9 mm
2 D 13.3 mm
2.5 E 13.7 mm

3

 F 14.0 mm

3.5

 G 14.5 mm 

4

 H 15.0 mm

4.5

 I 15.3 mm

5

 J 15.6 mm

5.5

 K 16.2 mm

6

 L 16.6 mm

6.5

 M 16.9 mm

7

 N 17.2 mm

7.5

 O 17.8 mm

8

 P 18.1 mm
8.5 Q 18.5 mm