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International Ring Sizes

International Ring Sizes

Size in MM
US & Canada
Great Britain
Japan
France
Switzerland
Germany
44.1
3
F
4
44
4
14
45.4
3 ½
G
5
45 ¼
5 ¼
14 ½
46.7
4
H ½
7
46 ½
6 ½
15
48.0
4 ½
I ½
8
47 ¾
7 ¾
15 ½
49.2
5
J ½
9
49
9
15 ¾
50.5
5 ½
K ½
10
50 ¼
10 ¼
16 ¼
51.8
6
L ½
12
51 ½
11 ½
16 ½
53.1
6 ½
M ½
13
52 ¾
12 ¾
17
54.3
7
O
14
54
14
17 ¼
55.6
7 ½
P
15
55 ¼
15 ¼
17 ¾
56.9
8
Q
16
56 ½
16 ½
18
58.2
8 ½
R
17
57 ¾
17 ¾
18 ½
59.4
9
S
18
59
19
19
60.7
9 ½
--
19
60 ¼
20 ¼
19 ½
62.0
10
T ½
20
61 ½
21 ½
20
63.3
10 ½
U ½
22
62 ¾
22 ¾
20 ½
64.5
11
V ½
23
64
24
20 ¾
65.8
11 ½
W ½
24
65 ¼
25 ¼
21
67.1
12
Y
25
66 ½
26 ½
21 ¼
68.3
12 ½
Z
26
67 ¾
27 ¾
21 ¾
69.6
13
--
27
69
29
22

To determine your ring size:

  • Use a piece of string or dental floss and wrap it around the base of your finger.
  • Use a pen to mark the point on the string where the end meets.
  • Use a millimeter ruler to measure the string.
  • Choose the closest measurement to the chart above to find your ring size.

    • Tips for best results:

    • Allow enough room to accommodate your knuckle.
    • Bear in mind, different fingers on the same and the opposite hand may have different sizes. Therefore, measure the specific finger on which you are planning to wear the ring.
    • Measure your finger at the end of the day when your finger is likely to be largest.