Ring Size Chart
Australia & UK |
USA & Canada |
Diameter, mm |
Circumference, mm |
F |
3 |
14.1 |
44.2 |
F 1/2 |
|
14.3 |
44.8 |
G |
3 1/2 |
14.5 |
45.6 |
G 1/2 |
|
14.7 |
46.2 |
H |
4 |
14.9 |
46.8 |
H 1/2 |
|
15.1 |
47.4 |
I |
4 1/2 |
15.3 |
48.1 |
J |
4 3/4 |
15.5 |
48.7 |
J 1/2 |
5 |
15.7 |
49.3 |
K |
5 1/4 |
15.9 |
50.0 |
K 1/2 |
5 1/2 |
16.1 |
50.6 |
L |
5 3/4 |
16.3 |
51.2 |
L 1/2 |
6 |
16.5 |
51.8 |
M |
6 1/4 |
16.7 |
52.5 |
M 1/2 |
6 1/2 |
16.9 |
53.1 |
N |
6 3/4 |
17.1 |
53.7 |
N 1/2 |
7 |
17.3 |
54.3 |
O |
7 1/4 |
17.5 |
55.0 |
O 1/2 |
7 1/2 |
17.7 |
55.6 |
P |
7 3/4 |
17.9 |
56.2 |
P 1/2 |
8 |
18.1 |
56.9 |
Q |
8 1/4 |
18.3 |
57.5 |
Q 1/2 |
8 1/2 |
18.5 |
58.1 |
R |
8 3/4 |
18.8 |
59.1 |
R 1/2 |
9 |
19.0 |
59.7 |
S |
9 1/4 |
19.2 |
60.3 |
S 1/2 |
9 1/2 |
19.4 |
60.9 |
T |
9 3/4 |
19.6 |
61.6 |
T 1/2 |
10 |
19.8 |
62.2 |
U |
10 1/4 |
20.0 |
62.8 |
U 1/2 |
10 1/2 |
20.2 |
63.5 |
V |
10 3/4 |
20.4 |
64.1 |
V 1/2 |
11 |
20.6 |
64.7 |
W |
11 1/4 |
20.8 |
65.3 |
W 1/2 |
11 1/2 |
21.0 |
66.0 |
X |
11 3/4 |
21.2 |
66.6 |
X 1/2 |
12 |
21.4 |
67.2 |
Y |
12 1/4 |
21.6 |
67.9 |
Y 1/2 |
|
21.7 |
68.2 |
Z |
12 1/2 |
21.8 |
68.5 |
Z 1/2 |
12 3/4 |
22.0 |
69.1 |
|
13 |
22.2 |
69.7 |
Z+1 |
13 1/4 |
22.4 |
70.4 |
|
13 1/2 |
22.6 |
71.0 |