International Ring Size

How to find your ring size?

If you'd like to measure your ring size yourself, here are 4 easy steps.

1.Wrap a thin strip of paper or string around the base of the finger that will wear the ring.

2.Mark the point at which the string or paper meets itself.

3.Use a ruler to measure the length of the string/paper from its tip to the mark you made. This is your finger's measurement.

4.Using the chart below, match the measurement to your ring size.

 

 

 

U.S. / CND.
U.K. JAPANESS Diameter Circumference
4
H 1/2
7
14.8 mm
46.5 mm
4 1/2
I 1/2
8
15.2 mm
48 mm
5
J 1/2
9
15.6 mm
49 mm
5 1/2
L
10
16 mm
50.5 mm
6
M
12
16.4 mm
52 mm
6 1/2
N
13
16.8 mm
53 mm
7
O
14
17.3 mm
54.5 mm
7 1/2
P
15
17.7 mm
55.5 mm
8
Q
16
18.1 mm
57 mm
8 1/2
Q 1/2
17
18.5 mm
58 mm
9
R 1/2
18
18.9 mm
59.5 mm
9 1/2
S 1/2
20
19.3 mm
61 mm
10
T 1/2
21
19.7 mm
62 mm
10 1/2
U 1/2
22
20.1 mm
63.5 mm
11
V 1/2
24
20.6 mm
64.5 mm
11 1/2
W 1/2
25
21 mm
66 mm
12
Y
26
21.4 mm
67.5 mm
12 1/2
Z
27
21.8 mm
68.5 mm
13
Z + 1
28
22.2 mm
70 mm
13 1/2
Z + 2
29
22.6 mm
71 mm
14
Z + 3
31
23 mm
72.5 mm
14 1/2
Z + 4
32
23.4 mm
74 mm
15
Z + 5
33
23.9 mm
75 mm