International Finger Sizes

U.S. Sizes
Finger Size ID mm ID inch
3 14.12 0.556
3.5 14.53 0.572
4 14.94 0.588
4.5 15.34 0.604
5 15.75 0.620
5.5 16.15 0.636
6 16.56 0.652
6.5 16.97 0.668
7 17.37 0.684
7.5 17.78 0.700
8 18.19 0.716
8.5 18.59 0.732
9 19.00 0.748
9.5 19.41 0.764
10 19.81 0.780
10.5 20.22 0.796
11 20.62 0.812
11.5 21.03 0.828
12 21.44 0.844
12.5 21.84 0.860
British Sizes
Finger Size ID mm ID inch
G 14.43 0.5680
H 14.82 0.5835
I 15.21 0.5990
J 15.61 0.6145
K 16.00 0.6300
L 16.40 0.6455
M 16.79 0.6610
N 17.18 0.6765
O 17.58 0.6920
P 17.97 0.7075
Q 18.36 0.7230
R 18.76 0.7385
S 19.15 0.7540
T 19.55 0.7695
U 19.94 0.7850
V 20.33 0.8005
W 20.73 0.8160
X 21.12 0.8315
Y 21.51 0.8470
Z 21.91 0.8625
European / New Japanese Sizes
Finger Size ID mm ID inch
44 14.01 0.551
46 14.64 0.576
48 15.28 0.602
50 15.92 0.627
52 16.55 0.652
54 17.19 0.677
56 17.83 0.702
58 18.46 0.727
60 19.10 0.752
62 19.74 0.777
64 20.37 0.802
66 21.01 0.827
68 21.65 0.852
70 22.28 0.877
72 22.92 0.902
74 23.55 0.927
76 24.19 0.952
78 24.83 0.977
80 25.46 1.003
82 26.10 1.028
 
 

Need to know how these sizes compare internationally?

In todays Global market we all must be prepared to discuss ring terminology using the terms and standards of our customers. We hope these charts help you in converting the various finger size standards used globally.

The Japanese market may use one of two different finger size standards. We will refer to the "New" Japanese standard as the European/ Japan chart and the  "Old" Japanese standard as "Traditional Japan" chart.