Ring Sizing
First, select a ring that fits for the finger.
Next, measure the diameter opening of that ring.
Use the chart below to determine your ring size.
INTERNAL DIAMETER (MM)
15.7 mm US 5 | UK/AUS J | HK 10
16.1mm US 5.5 | UK/AUS J 1/2 | HK 11
16.51mm US 6 | UK/AUS L | HK 12
16.92mm US 6.5 | UK/AUS L 1/2 | HK 13
17.35mm US 7 | UK/AUS N | HK 14