How to establish the correct ring size

To ensure a comfortable and safe fit a ring must be the correct size for the wearer. This is achieved by using an established table of ring sizes from which the correct size is selected and then the ring is made or resized to that size.

If the ring is for a gift then having the correct size will ensure that the surprise is a magical moment that will never be forgotten. And with a little planning, it can come off brilliantly. Finding a person's ring size without their knowing is not as difficult as you might think. Here are some solutions to getting the persons' ring size while keeping your gift a surprise. Keep in mind that the ring size will vary for each finger.
  • Bring one of their rings into our store without arousing any suspicion. Offer to take their jewellery to be cleaned and when you bring it in we will measure it at the same time.
  • Make an impression of an existing ring which you know fits the desired finger. A bar of soap or a piece of clay can be used to take a reliable measurement.
  • Trace the inside of the ring on a piece of paper.
  • Put one of their rings on your own finger. Push it down as far as it will go and then mark the spot with a pen. Then just show us the marking and we can measure it for you.
COMPARISON TABLE OF RING SIZES

We use the British ring size standard, the others are included here for companions and use by our international customers.

British
Ring Size
Inside
Diameter
mm
Inside
Diameter
inches
European
Size
American
Size
(approx)
A
12.065
0.4750
.
.
.
12.096
0.4762
38
.
A 1/2
12.263
0.4828
.
.
.
12.344
0.4860
.
1
.
12.414
0.4887
39
.
B
12.459
0.4905
.
.
B 1/2
12.657
0.4983
.
.
.
12.733
0.5013
40
.
.
12.751
0.5020
.
1 1/2
C
12.852
0.5060
.
.
C 1/2
13.051
0.5138
41
.
.
13.157
0.5180
.
2
D
13.246
0.5215
.
.
.
13.369
0.5263
42
.
D 1/2
13.444
0.5293
.
.
.
13.564
0.5340
.
2 1/2
E
13.640
0.5370
.
.
.
13.678
0.5389
43
.
E 1/2
13.838
0.5448
.
.
.
13.970
0.5500
.
3
.
14.006
0.5514
44
.
F
14.034
0.5525
.
.
F 1/2
14.232
0.5603
.
.
.
14.324
0.5639
45
.
.
14.376
0.5660
.
3 1/2
G
14.427
0.5680
.
.
G 1/2
14.625
0.5758
.
.
.
14.642
0.5765
46
.
.
14.783
0.5820
.
4
H
14.821
0.5835
.
.
.
14.961
0.5890
47
.
H 1/2
15.019
0.5913
.
.
.
15.189
0.5980
.
4 1/2
I
15.215
0.5999
.
.
15.279
0.6015
48
.
I 1/2
15.413
0.6068
.
.
.
15.597
0.6141
49
5
J
15.608
0.6145
.
.
J 1/2
15.806
0.6223
.
.
.
15.916
0.6266
50
.
K
16.002
0.6300
.
5 1/2
K 1/2
16.200
0.6378
.
.
.
16.234
0.6391
51
1
L
16.396
0.6455
.
6
.
16.552
0.6517
52
.
L 1/2
16.594
0.6533
.
.
M
16.789
0.6610
.
.
.
16.815
0.6620
.
6 1/2
.
16.871
0.6642
53
.
M 1/2
16.988
0.6688
.
.
N
17.183
0.6765
.
.
.
17.189
0.6767
54
.
.
17.221
0.6780
.
7
N 1/2
17.381
0.6843
.
.
.
17.507
0.6893
55
.
O
17.577
0.6920
.
.
.
17.628
0.6940
.
7 1/2
O 1/2
17.775
0.6998
.
.
.
17.826
07.018
56
.
P
17.971
0.7075
.
.
.
18.034
0.7100
.
8
.
18.144
0.7143
57
.
P 1/2
18.169
0.7153
.
.
Q
18.364
0.7230
.
.
.
18.453
0.7265
.
8 1/2
.
18.462
0.7269
58
.
Q 1/2
18.562
0.7308
.
.
R
18.758
0.7385
.
.
.
18.780
0.7394
59
.
.
18.872
0.7430
.
9
R 1/2
18.956
0.7463
.
.
.
19.098
0.7519
60
.
S
19.152
0.7540
.
.
.
19.279
0.7590
.
9 1/2
S 1/2
19.350
0.7618
.
.
.
19.416
0.7644
61
.
T
19.545
0.7695
.
.
.
19.736
0.7770
62
.
T 1/2
19.741
0.7772
.
.
.
19.761
0.7780
.
10
U
19.939
0.7850
.
.
.
20.054
0.7895
63
.
U 1/2
20.137
0.7928
.
.
.
20.168
0.7940
.
10 1/2
V
20.333
0.8005
.
.
.
20.372
0.8020
64
.
V 1/2
20.531
0.8083
.
.
.
20.599
0.8110
.
11
.
20.690
0.8146
65
.
W
20.726
0.8160
.
.
W 1/2
20.925
0.8238
.
.
.
21.008
0.8271
66
11 1/2
X
21.120
0.8315
.
.
X 1/2
21.318
0.8393
.
.
.
21.326
0.8369
67
.
.
21.412
0.8430
.
12
Y
21.514
0.8470
.
.
.
21.645
0.8522
68
.
Y 1/2
21.712
0.8548
.
.
.
21.819
0.8590
.
12 1/2
Z
21.908
0.8625
.
.
.
21.963

0.8647
69
.
Z 1/2
22.106
0.8703
.
.
.
22.225
0.8750
.
13

 

 
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