Ring Sizing
First, select a ring that fits the finger.
Next, measure the diameter opening of that ring.
Use the chart below to determine your ring size.
INTERNAL DIAMETER (MM)
Australian Size Inside
F 3 14.1 mm
G 3.5 14.5 mm
H 4 14.9 mm
I 4.5 15.3 mm
J 5 15.7 mm
K 5.5 16.1 mm
L 6 16.5 mm
M 6.5 16.9 mm
N 7 17.3 mm
O 7.5 17.7 mm
P 8 18.1 mm
Q 8.5 18.5 mm
R 9 19 mm
S 9.5 19.4 mm
T 10 19.8 mm
U 10.5 20.2 mm
V 11 20.6 mm
W 11.5 21 mm
X 12 21.4 mm
Z 12.5 21.8 mm
Z 13 22.5 mm
Z+2 13.5 22.9 mm
Z+3 14 23.2 mm
