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Help - Ring Sizer & Ring Sizes

Ring Sizer & Ring Sizes

UK ring sizing differs from many other countries in the world. If you'd like to order a ring from our website, but don't know your ring size, please contact mike@jewellers.net.

Here's a chart converter for UK, US and European Sizing.:

UK Size European
Size (Approx.)
American Size
(Approx.)
Inside 
Diameter
Inches mm
G     0.5680 14.427
G     0.5758 14.625
  46   0.5765 14.642
    4 0.5820 14.783
H   0.5835 14.821
47 0.5890 14.961
H   0.5913 15.019
    4 0.5980 15.189
I     0.5990 15.215
48   0.6015 15.279
I     0.6068 15.413
  49 5 0.6141 15.597
J   0.6145 15.608
J   0.6223 15.806
  50 0.6266 15.916
K   5 0.6300 16.002
K     0.6378 16.200
  51   0.6391 16.234
L   6 0.6455 16.396
52 0.6517 16.552
L   0.6533 16.594
M   0.6610 16.789
  6 0.6620 16.815
53   0.6642 16.871
M     0.6688 16.988
N     0.6765 17.183
54   0.6767 17.189
  7 0.6780 17.221
N   0.6843 17.381
  55 0.6893 17.507
O   0.6920 17.577
  7 0.6940 17.628
O     0.6998 17.775
  56   0.7018 17.826
P     0.7075 17.971
  8 0.7100 18.034
57 0.7143 18.144
P   0.7153 18.169
Q   0.7230 18.364
  8 0.7265 18.453
58   0.7269 18.462
Q     0.7308 18.562
R     0.7385 18.758
59   0.7394 18.780
  9 0.7430 18.872
R   0.7463 18.956
  60 0.7519 19.098
S   0.7540 19.152
  9 0.7590 19.279
S     0.7618 19.350
  61   0.7644 19.416
T     0.7695 19.545
62   0.7770 19.736
T     0.7772 19.741
    10 0.7780 19.761
U   0.7850 19.939
63 0.7895 20.054
U   0.7928 20.137
    10 0.7940 20.168
V     0.8005 20.333
64   0.8020 20.372
V     0.8083 20.531
    11 0.8110 20.599
  65 0.8146 20.690
W   0.8160 20.726
W   0.8238 20.925
  66 11 0.8271 21.008
X     0.8315 21.120
X     0.8393 21.318
  67   0.8396 21.326
    12 0.8430 21.412
Y   0.8470 21.514
68 0.8522 21.645
Y   0.8548 21.712
    12 0.8590 21.819
Z     0.8625 21.908
69   0.8647 21.963
Z     0.8703 22.106
    13 0.8750 22.225
Here's an approx. scaled chart to give you an idea of the sizing structure, please note that for accurate measurements  you need to use a ring sizer (available from Jewellers.net)
ring size guide
 
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