Ring Sizes

 RING SIZES AUSTRALIA
 Inside Diameter (mm) Australian Size US Size
15.5 mm J 5
16 mm K 5.5
16.35 mm L 6
16.75 mm M 6.5
17.25 mm N 7
17.50 mm 0 7.5
18 mm P 8
18.37 mm Q 8.5
18.75 mm R 9
19 mm S 9.5
19.50 mm T 10
20 mm U 10.5
20.25 mm V 11