Ring Size Chart - Big Joes Biker Rings

We only use North American (USA) sizes - full and half so please ORDER in USA size. Sizes available are 6-16.

Length of
String or
Paper in mm

Finger
Diameter
in mm

ORDER
USA
SIZE

Australian
British
Size

French
Size

German
Size

Japanese
Size

52
53
55
56
57
58
59
61
62
63
65
66
68
69
70
71
72
75
76

16.51
16.92
17.35
17.75
18.19
18.53
18.89
19.41
19.84
20.20
20.68
21.08
21.49
21.89
22.33
22.76
23.19
23.53
23.89

6
6 1/2
7
7 1/2
8
8 1/2
9
9 1/2
10
10 1/2
11
11 1/2
12
12 1/2
13
13 1/2
14
14 1/2
15

M
N
O
P
Q
Q 1/2
R 1/2
S 1/2
T 1/2
U 1/2
V 1/2
W 1/2
Y
Z
-
-
-
-
-

52 3/4
54
55 1/4
56 1/2
57 3/4
58
59 1/4
60 1/2
61 3/4
62 3/4
64 1/4
66
67 1/2
68 3/4
-
-
-
-
-

16 1/2
17
17 1/4
17 3/4
18
18 1/2
19
19 1/2
20
20 1/2
20 3/4
21
21 1/4
21 3/4
22
-
-
-
-

12
13
14
15
16
17
18
19
20
22
23
24
25
26
27
28
-
-
-

If you are not sure how to use the size chart or would like to double check your results, just visit your local jeweler and he will give you your ring size.

We only use USA sizes - full and half so please inform your jeweller to give you your size in USA Size to the nearest full or half size.

Tips for Measuring Ring Size
Here are some tips to make your ring size measurement more accurate:

Confirm the printed paper size with a ruler.

Pull tightly. The sizer must fit snugly to produce an accurate size.

Don't measure cold fingers. This is when fingers are their smallest.

For the most accurate reading, measure your finger at the end of the day when it is largest.

FREE DELIVERY - FREE RESIZING - 100% MONEY BACK GUARANTEE