International Finger Size Comparison Chart

British Sizes U.S. Verses British U.S. Sizes U.S. Verses Japanese Japanese Sizes
Finger Size ID mm ID inch Closest US Size ID(inch) Closest ID(inch) Variance Finger Size ID mm ID inch Closest US Size ID(inch) Closest ID(inch) Variance Finger Size ID mm ID inch
G 14.43 0.5680 3.375 0.568 0.0000 3 14.12 0.556 2 7/8 0.552 0.0006 44 14.00 0.551
H 14.82 0.5835 3.875 0.584 0.0005 3.5 14.53 0.572 3 5/8 0.576 0.0005 46 14.63 0.576
I 15.21 0.5990 4.375 0.6 0.0010 4 14.94 0.588 4 3/8 0.600 -0.0015 48 15.29 0.602
J 15.61 0.6145 4.875 0.616 0.0015 4.5 15.34 0.604 5 1/4 0.628 -0.0014 50 15.93 0.627
K 16.00 0.6300 5.25 0.628 -0.0020 5 15.75 0.620 6 0.652 0.0003 52 16.56 0.652
L 16.40 0.6455 5.75 0.644 -0.0015 5.5 16.15 0.636 6 3/4 0.676 0.0007 54 17.20 0.677
M 16.79 0.6610 6.25 0.66 -0.0010 6 16.56 0.652 7 1/2 0.700 -0.0018 56 17.83 0.702
N 17.18 0.6765 6.75 0.676 -0.0005 6.5 16.97 0.668 8 3/4 0.728 -0.0012 58 18.47 0.727
O 17.58 0.6920 7.25 0.692 0.0000 7 17.37 0.684 9 1/8 0.752 0.0001 60 19.10 0.752
P 17.97 0.7075 7.75 0.708 0.0005 7.5 17.78 0.700 9 7/8 0.776 -0.0010 62 19.74 0.777
Q 18.36 0.7230 8.25 0.724 0.0010 8 18.19 0.716 10 3/4 0.804 0.0020 64 20.37 0.802
R 18.76 0.7385 8.75 0.74 0.0015 8.5 18.59 0.732 11 1/2 0.828 0.0009 66 21.01 0.827
S 19.15 0.7540 9.125 0.752 -0.0020 9 19.00 0.748 12 1/4 0.852 -0.0002 68 21.64 0.852
T 19.55 0.7695 9.625 0.768 -0.0015 9.5 19.41 0.764 13 0.876 -0.0012 70 22.28 0.877
U 19.94 0.7850 10.125 0.784 -0.0010 10 19.81 0.780 13 7/8 0.904 0.0017 72 22.91 0.902
V 20.33 0.8005 10.625 0.8 -0.0005 10.5 20.22 0.796 14 5/8 0.928 0.0006 74 23.55 0.927
W 20.73 0.8160 11.125 0.816 0.0000 11 20.62 0.812 15 3/8 0.952 -0.0004 76 24.18 0.952
X 21.12 0.8315 11.625 0.832 0.0005 11.5 21.03 0.828 16 1/8 0.976 -0.0015 78 24.82 0.977
Y 21.51 0.8470 12 1/8 0.848 0.0010 12 21.44 0.844 17 1.004 0.0014 80 25.48 1.003
Z 21.91 0.8625 12.625 0.864 0.0015 12.5 21.84 0.860 17 3/4 1.028 0.0004 82 26.11 1.028
 

Alloy Options

  • Pure Platinum
  • Platinum with 5% Gold
  • Platinum with 3.5% to 10% Rhodium
  • Platinum with 3.5% Iridium

ROC Advanced Tech Alloys on Request

Rochoet is happy to develop advanced PGM alloys for your particular analytical requirements.