We’ve created a simple international ring size chart to help you find the perfect fit across US, UK Australia, Europe, India, and Japan. With online jewelry shopping becoming more common, getting the right size matters especially for meaningful pieces. This guide helps you choose confidently and enjoy your ring without the worry of resizing later.
|
Diameter (mm) |
Diameter (in) |
Circumference (mm) |
Circumference (in) |
US Size |
India |
UK/AU |
EU |
Japan |
|
14.07 |
0.554 |
44.17 |
1.739 |
3.0 |
4 |
F½ |
44.2 |
4 |
|
14.27 |
0.562 |
44.81 |
1.764 |
3.25 |
4.5 |
G |
44.8 |
5 |
|
14.48 |
0.570 |
45.45 |
1.789 |
3.5 |
5 |
G½ |
45.5 |
6 |
|
14.68 |
0.578 |
46.10 |
1.815 |
3.75 |
5.5 |
H |
46.1 |
7 |
|
14.86 |
0.585 |
46.74 |
1.840 |
4.0 |
6 |
H½ |
46.8 |
7 |
|
15.04 |
0.592 |
47.38 |
1.865 |
4.25 |
6.5 |
I |
47.4 |
8 |
|
15.27 |
0.602 |
48.02 |
1.890 |
4.5 |
7 |
I½ |
48.0 |
9 |
|
15.47 |
0.609 |
48.66 |
1.916 |
4.75 |
8 |
J |
48.7 |
9 |
|
15.70 |
0.618 |
49.30 |
1.941 |
5.0 |
9 |
J½ |
49.3 |
10 |
|
15.90 |
0.626 |
49.95 |
1.966 |
5.25 |
9.5 |
K |
50.0 |
11 |
|
16.10 |
0.634 |
50.59 |
1.992 |
5.5 |
10 |
K½ |
50.6 |
12 |
|
16.30 |
0.642 |
51.23 |
2.017 |
5.75 |
11 |
L |
51.2 |
12 |
|
16.51 |
0.650 |
51.87 |
2.042 |
6.0 |
12 |
L½ |
51.9 |
13 |
|
16.71 |
0.658 |
52.51 |
2.067 |
6.25 |
12.5 |
M |
52.5 |
14 |
|
16.92 |
0.666 |
53.16 |
2.093 |
6.5 |
13 |
M½ |
53.1 |
14 |
|
17.12 |
0.674 |
53.80 |
2.118 |
6.75 |
14 |
N |
53.8 |
15 |
|
17.32 |
0.682 |
54.44 |
2.143 |
7.0 |
14.5 |
N½ |
54.4 |
15 |
|
17.53 |
0.690 |
55.08 |
2.169 |
7.25 |
15 |
O |
55.1 |
16 |
|
17.73 |
0.698 |
55.72 |
2.194 |
7.5 |
16 |
O½ |
55.7 |
17 |
|
17.93 |
0.706 |
56.36 |
2.219 |
7.75 |
16.5 |
P |
56.3 |
17 |
|
18.14 |
0.714 |
57.00 |
2.244 |
8.0 |
17 |
P½ |
57.0 |
18 |
|
18.34 |
0.722 |
57.65 |
2.270 |
8.25 |
17.5 |
Q |
57.6 |
19 |
|
18.54 |
0.730 |
58.29 |
2.295 |
8.5 |
18 |
Q½ |
58.3 |
19 |
|
18.75 |
0.738 |
58.93 |
2.320 |
8.75 |
19 |
R |
58.9 |
20 |
|
18.95 |
0.746 |
59.57 |
2.345 |
9.0 |
20 |
R½ |
59.5 |
21 |
|
19.15 |
0.754 |
60.21 |
2.371 |
9.25 |
20.5 |
S |
60.2 |
22 |
|
19.35 |
0.762 |
60.86 |
2.396 |
9.5 |
21 |
S½ |
60.8 |
23 |
|
19.56 |
0.770 |
61.50 |
2.421 |
9.75 |
22 |
T |
61.4 |
23 |
|
19.76 |
0.778 |
62.14 |
2.446 |
10.0 |
22.5 |
T½ |
62.1 |
24 |
|
19.96 |
0.786 |
62.78 |
2.472 |
10.25 |
23 |
U |
62.7 |
25 |
|
20.17 |
0.794 |
63.42 |
2.497 |
10.5 |
24 |
U½ |
63.4 |
25 |
|
20.37 |
0.802 |
64.06 |
2.522 |
10.75 |
24.5 |
V |
64.0 |
26 |
|
20.57 |
0.810 |
64.71 |
2.547 |
11.0 |
25 |
V½ |
64.6 |
27 |
|
20.78 |
0.818 |
65.35 |
2.573 |
11.25 |
26 |
W |
65.3 |
28 |
|
20.98 |
0.826 |
65.99 |
2.598 |
11.5 |
26.5 |
W½ |
65.9 |
28 |
|
21.18 |
0.834 |
66.63 |
2.623 |
11.75 |
27 |
X |
66.5 |
29 |
|
21.39 |
0.842 |
67.27 |
2.648 |
12.0 |
28 |
X½ |
67.2 |
30 |
|
21.59 |
0.850 |
67.91 |
2.674 |
12.25 |
28.5 |
Y |
67.8 |
31 |
|
21.79 |
0.858 |
68.56 |
2.699 |
12.5 |
29 |
Y½ |
68.5 |
32 |
|
21.99 |
0.866 |
69.20 |
2.724 |
12.75 |
30 |
Z |
69.1 |
32 |
|
22.20 |
0.874 |
69.84 |
2.749 |
13.0 |
31 |
Z½ |
69.7 |
33 |
|
22.40 |
0.882 |
70.48 |
2.775 |
13.25 |
31.5 |
- |
70.4 |
34 |
|
22.60 |
0.890 |
71.12 |
2.800 |
13.5 |
32 |
- |
71.0 |
35 |
|
22.81 |
0.898 |
71.76 |
2.825 |
13.75 |
33 |
- |
71.6 |
35 |
|
23.01 |
0.906 |
72.41 |
2.850 |
14.0 |
34 |
- |
72.3 |
36 |
