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Ring Size Conversion Chart
| Australia/UK |
US |
Japan |
Hong Kong |
| F |
3 |
4 |
6 |
| F½ |
3.25 |
5 |
7 |
| G |
3.5 |
6 |
8 |
| G½ |
3.75 |
7 |
9 |
| H |
4 |
7 |
9 |
| H½ |
4.25 |
8 |
10 |
| I |
4.5 |
9 |
11 |
| I½ |
4.75 |
10 |
12 |
| J |
5 |
10 |
12 |
| J½ |
5.25 |
11 |
13 |
| K |
5.5 |
11 |
14 |
| K½ |
5.75 |
12 |
15 |
| L |
6 |
13 |
16 |
| L½ |
6.25 |
13 |
17 |
| M |
6.5 |
14 |
17 |
| M½ |
6.75 |
15 |
18 |
| N |
7 |
15 |
19 |
| N½ |
7.25 |
16 |
20 |
| O |
7.5 |
16 |
20 |
| O½ |
7.75 |
17 |
21 |
| P |
8 |
18 |
22 |
| P½ |
8.25 |
18 |
23 |
| Q |
8.5 |
19 |
24 |
| Q½ |
8.75 |
20 |
25 |
| R |
9 |
21 |
26 |
| R½ |
9.25 |
22 |
27 |
| S |
9.5 |
22 |
28 |
| S½ |
9.75 |
23 |
29 |
| T |
10 |
23 |
29 |
| T½ |
10.25 |
24 |
30 |
| U |
10.5 |
25 |
31 |
| U½ |
10.75 |
26 |
32 |
| V |
11 |
26 |
33 |
| V½ |
11.25 |
27 |
34 |
| W |
11.5 |
28 |
35 |
| W½ |
11.75 |
29 |
36 |
| X |
12 |
30 |
37 |
| X½ |
12.25 |
31 |
38 |
| Y |
12.5 |
31 |
39 |
| Z |
12.75 |
32 |
40 |
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