Ring Size Conversion Chart
|
Inside Diameter |
Inside Circumference |
JPN
|
|
GBR
|
SWZ
|
||
|
(inches)
|
(mm)
|
(inches)
|
(mm)
|
CAN
|
AUS
|
||
|
0.458
|
11.633
|
1.438
|
36.528
|
|
0
|
|
|
|
0.466
|
11.836
|
1.463
|
37.166
|
|
1/4
|
|
|
|
0.474
|
12.040
|
1.488
|
37.804
|
|
1/2
|
A
|
|
|
0.482
|
12.243
|
1.513
|
38.442
|
|
3/4
|
A 1/2
|
|
|
0.490
|
12.446
|
1.539
|
39.08
|
1
|
1
|
B
|
|
|
0.498
|
12.649
|
1.564
|
39.718
|
|
1 1/4
|
B 1/2
|
|
|
0.506
|
12.852
|
1.589
|
40.357
|
|
1 1/2
|
C
|
|
|
0.514
|
13.056
|
1.614
|
40.995
|
|
1 3/4
|
C 1/2
|
|
|
0.522
|
13.259
|
1.639
|
41.633
|
2
|
2
|
D
|
1.5
|
|
0.530
|
13.462
|
1.664
|
42.271
|
|
2 1/4
|
D 1/2
|
|
|
0.538
|
13.665
|
1.689
|
42.909
|
3
|
2 1/2
|
E
|
2.75
|
|
0.546
|
13.868
|
1.714
|
43.547
|
|
2 3/4
|
E 1/2
|
|
|
0.554
|
14.072
|
1.740
|
44.185
|
4
|
3
|
F
|
4
|
|
0.562
|
14.275
|
1.765
|
44.823
|
5
|
3 1/4
|
F 1/2
|
5.25
|
|
0.570
|
14.478
|
1.790
|
45.461
|
|
3 1/2
|
G
|
|
|
0.578
|
14.681
|
1.815
|
46.099
|
6
|
3 3/4
|
G 1/2
|
6.5
|
|
0.586
|
14.884
|
1.840
|
46.737
|
7
|
4
|
H
|
|
|
0.594
|
15.088
|
1.865
|
47.375
|
|
4 1/4
|
H 1/2
|
7.75
|
|
0.602
|
15.291
|
1.890
|
48.013
|
8
|
4 1/2
|
I
|
|
|
0.610
|
15.494
|
1.915
|
48.651
|
|
4 3/4
|
J
|
9
|
|
0.618
|
15.697
|
1.941
|
49.289
|
9
|
5
|
J 1/2
|
|
|
0.626
|
15.900
|
1.966
|
49.927
|
|
5 1/4
|
K
|
10
|
|
0.634
|
16.104
|
1.991
|
50.565
|
10
|
5 1/2
|
K 1/2
|
|
|
0.642
|
16.307
|
2.016
|
51.203
|
|
5 3/4
|
L
|
11.75
|
|
0.650
|
16.510
|
2.041
|
51.841
|
11
|
6
|
L 1/2
|
12.75
|
|
0.658
|
16.713
|
2.066
|
52.479
|
12
|
6 1/4
|
M
|
|
|
0.666
|
16.916
|
2.091
|
53.117
|
13
|
6 1/2
|
M 1/2
|
14
|
|
0.674
|
17.120
|
2.116
|
53.756
|
|
6 3/4
|
N
|
|
|
0.682
|
17.323
|
2.141
|
54.394
|
14
|
7
|
N 1/2
|
15.25
|
|
0.690
|
17.526
|
2.167
|
55.032
|
|
7 1/4
|
O
|
|
|
0.698
|
17.729
|
2.192
|
55.67
|
15
|
7 1/2
|
O 1/2
|
16.5
|
|
0.706
|
17.932
|
2.217
|
56.308
|
|
7 3/4
|
P
|
|
|
0.714
|
18.136
|
2.242
|
56.946
|
16
|
8
|
P 1/2
|
17.75
|
|
0.722
|
18.339
|
2.267
|
57.584
|
|
8 1/4
|
Q
|
|
|
0.730
|
18.542
|
2.292
|
58.222
|
17
|
8 1/2
|
Q 1/2
|
|
|
0.738
|
18.745
|
2.317
|
58.86
|
|
8 3/4
|
R
|
19
|
|
0.746
|
18.948
|
2.342
|
59.498
|
18
|
9
|
R 1/2
|
|
|
0.754
|
19.152
|
2.368
|
60.136
|
|
9 1/4
|
S
|
20.25
|
|
0.762
|
19.355
|
2.393
|
60.774
|
19
|
9 1/2
|
S 1/2
|
|
|
0.770
|
19.558
|
2.418
|
61.412
|
|
9 3/4
|
T
|
21.5
|
|
0.778
|
19.761
|
2.443
|
62.05
|
20
|
10
|
T 1/2
|
|
|
0.786
|
19.964
|
2.468
|
62.688
|
21
|
10 1/4
|
U
|
|
|
0.794
|
20.168
|
2.493
|
63.326
|
22
|
10 1/2
|
U 1/2
|
22.75
|
|
0.802
|
20.371
|
2.518
|
63.964
|
|
10 3/4
|
V
|
|
|
0.810
|
20.574
|
2.543
|
64.602
|
23
|
11
|
V 1/2
|
|
|
0.818
|
20.777
|
2.569
|
65.24
|
|
11 1/4
|
W
|
25
|
|
0.826
|
20.980
|
2.594
|
65.878
|
24
|
11 1/2
|
W 1/2
|
|
|
0.834
|
21.184
|
2.619
|
66.517
|
|
11 3/4
|
X
|
|
|
0.842
|
21.387
|
2.644
|
67.155
|
25
|
12
|
X 1/2
|
27.5
|
|
0.850
|
21.590
|
2.669
|
67.793
|
|
12 1/4
|
Y
|
|
|
0.858
|
21.793
|
2.694
|
68.431
|
26
|
12 1/2
|
Z
|
28.75
|
|
0.866
|
21.996
|
2.719
|
69.069
|
|
12 3/4
|
Z 1/2
|
|
|
0.874
|
22.200
|
2.744
|
69.707
|
27
|
13
|
|
|
|
0.882
|
22.403
|
2.769
|
70.345
|
|
13 1/4
|
Z1
|
|
|
0.890
|
22.606
|
2.795
|
70.983
|
|
13 1/2
|
|
|
|
0.898
|
22.809
|
2.820
|
71.621
|
|
13 3/4
|
Z2
|
|
|
0.906
|
23.012
|
2.845
|
72.259
|
|
14
|
Z3
|
|
|
0.914
|
23.216
|
2.870
|
72.897
|
|
14 1/4
|
|
|
|
0.922
|
23.419
|
2.895
|
73.535
|
|
14 1/2
|
Z4
|
|
|
0.930
|
23.622
|
2.920
|
74.173
|
|
14 3/4
|
|
|
|
0.938
|
23.825
|
2.945
|
74.811
|
|
15
|
|
|
|
0.946
|
24.028
|
2.970
|
75.449
|
|
15 1/4
|
|
|
|
0.954
|
24.232
|
2.996
|
76.087
|
|
15 1/2
|
|
|
|
0.962
|
24.435
|
3.021
|
76.725
|
|
15 3/4
|
|
|
|
0.970
|
24.638
|
3.046
|
77.363
|
|
16
|
|
|
+66 2286 5644
sales@jewelryprincess.com