The best and most accurate way to find a ring size is to have your finger professionally measured with a ring in the same millimeter (mm) width as the ring you are considering purchasing. Many of our customers have found that trying on wedding bands in different widths is the easiest way to determine their exact ring s
Huge selection of high quality heirloom fine estate jewelry, exclusive unique vintage reproduction jewelry styles and beautiful antique engagement rings made in the USA.
The best and most accurate way to find a ring size is to have your finger professionally measured with a ring in the same millimeter (mm) width as the ring you are considering purchasing. Many of our customers have found that trying on wedding bands in different widths is the easiest way to determine their exact ring size.
Enlarge and Print
Some customers have also found the above free printable ring sizer to be a helpful guide to determining ring size. In order to print the ring sizer on this page, be sure that your printer is set to 100%. In other words, make sure that you have not reduced the print size in print page set up or preferences. You can verify that the sizer printed correctly by measuring it with a ruler; it should measure from left to right: 3 3/8 inches.Once you have printed the ring sizer, you may cut it out and use it or try the following directions to find your ring size:Wrap a piece of loose string around your finger. Be sure to allow for the size of your knuckle.
With a pen, mark the point on the string where the end meets.
Using the chart, place the end of the string on the left hand line next to the letter A and stretch the string along the ring sizer toward the numbers.
The pen mark on your string should line up with a number to indicate your ring size.
Below find a chart of ring size conversions for the convenience of our international customers.
Shop our large collection of over 1,000 unique estate, antique, and vintage ring styles! ➤
International Ring Size Chart
USA&Canada
Diameter( inches )
Diameter( mm )
Great Britain&Australia
France
Germany
Japan
Switzerland
000
0.390
9.906
---
---
---
---
---
00
0.422
10.719
---
---
---
---
---
0
0.454
11.532
---
---
---
---
---
1/2
0.462
11.735
A
---
---
---
---
3/4
0.471
11.963
A-1/2
---
---
---
---
1
0.487
12.370
B
---
---
1
---
1 1/4
0.495
12.573
B-1/2
---
---
---
---
1 1/2
0.503
12.776
C
---
---
---
---
1 3/4
0.511
12.979
C-1/2
---
---
---
---
2
0.520
13.208
D
41 1/2
13 1/4
2
1 1/2
2 1/4
0.528
13.411
D-1/2
42 1/8
13 1/2
---
---
2 1/2
0.536
13.614
E
42 3/4
13 3/4
3
2 3/4
2 3/8
0.544
13.818
E- 1/2
43 3/8
---
---
3 3/8
3
0.553
14.046
F
44
14
4
4
3 1/4
0.561
14.249
F-1/2
44 5/8
14 1/4
---
4 5/8
3 1/2
0.569
14.453
G
45 1/4
14 1/2
5
5 1/4
3 3/4
0.577
14.656
G-1/2
45 7/8
14 3/4
6
5 7/8
4
0.586
14.884
H-1/2
46 1/2
15
7
6 1/2
4 1/4
0.594
15.088
I
47 1/8
15 1/4
---
7 1/8
4 1/2
0.602
15.291
I-1/2
47 3/4
15 1/2
8
7 3/4
4 3/4
0.610
15.494
J
48 3/8
---
---
8 3/8
5
0.619
15.723
J-1/2
49
15 3/4
9
9
5 1/4
0.627
15.926
K
49 5/8
16
---
9 5/8
5 1/2
0.635
16.129
K-1/2
50 1/4
16 1/4
10
10 1/4
5 3/4
0.643
16.332
L
50 7/8
---
11
10 7/8
6
0.652
16.561
L-1/2
51 1/2
16 1/2
12
11 1/2
6 1/4
0.660
16.764
M
52 1/8
16 3/4
---
12 1/8
6 1/2
0.668
16.967
M-1/2
52 3/4
17
13
12 3/4
6 3/4
0.676
17.170
N
53 3/8
---
---
13 3/8
7
0.685
17.399
O
54
17 1/4
14
14
7 1/4
0.693
17.602
O-1/2
54 5/8
17 1/2
---
14 5/8
7 1/2
0.701
17.805
P
55 1/4
17 3/4
15
15 1/4
7 3/4
0.709
18.009
P-1/2
55 7/8
---
---
15 7/8
8
0.717
18.212
Q
56 1/2
18
16
16 1/2
8 1/4
0.726
18.440
Q-1/2
57 1/8
18 1/4
---
17 1/8
8 1/2
0.734
18.644
R
57 3/4
18 1/2
17
17 3/4
8 3/4
0.742
18.847
R-1/2
58 3/8
18 3/4
---
18 3/8
9
0.750
19.050
S
59
19
18
19
9 1/4
0.759
19.279
S-1/2
59 5/8
19 1/4
---
19 5/8
9 1/2
0.767
19.482
---
60 1/4
19 1/2
19
20 1/4
9 3/4
0.775
19.685
T
60 7/8
19 3/4
---
20 7/8
10
0.783
19.888
T-1/2
61 1/2
20
20
21 1/2
10 1/4
0.792
20.117
U
62 1/8
20 1/4
21
22 1/8
10 1/2
0.800
20.320
U-1/2
62 3/4
20 1/2
22
22 3/4
10 3/4
0.808
20.523
V
63 3/8
---
---
23 3/8
11
0.816
20.726
V-1/2
64
20 3/4
23
24
11 1/4
0.825
20.955
W
64 5/8
---
---
24 5/8
11 1/2
0.833
21.158
W-1/2
65 1/4
21
24
25 1/4
11 3/4
0.841
21.361
X
65 7/8
---
---
25 7/8
12
0.849
21.565
Y
66 1/2
21 1/4
25
26 1/2
12 1/4
0.858
21.793
Y-1/2
67 1/8
21 1/2
---
27 1/8
12 1/2
0.866
21.996
Z
67 3/4
21 3/4
26
27 3/4
12 3/4
0.874
22.200
Z-1/2
68 3/8
---
---
28 3/8
13
0.882
22.403
---
69
22
27
29
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