Use the table below to convert between UK, US and EU ring sizes — accurate to within approximately a quarter of a finger size. For the most reliable result, request a free ring sizer and we’ll post one to you, anywhere in the world.
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| UK Size |
US Size |
EU Size |
| C |
1 3/4 |
40 1/2 |
| D |
2 1/4 |
41 1/2 |
| E |
2 3/4 |
42 3/4 |
| F |
3 1/4 |
44 1/2 |
| G |
3 3/4 |
45 1/2 |
| H |
4 1/4 |
46 1/2 |
| I |
4 3/4 |
47 3/4 |
| J |
5 1/4 |
49 1/2 |
| K |
5 1/2 |
50 1/4 |
| L |
6 |
51 1/2 |
| M |
6 1/2 |
52 1/2 |
| N |
7 |
54 |
| O |
7 1/2 |
55 1/4 |
| P |
8 |
56 1/4 |
| Q |
8 1/2 |
57 1/2 |
| R |
8 3/4 |
58 1/2 |
| S |
9 1/2 |
60 1/4 |
| T |
9 3/4 |
61 1/2 |
| U |
10 1/4 |
62 1/2 |
| V |
10 3/4 |
63 3/4 |
| W |
11 1/4 |
65 1/4 |
| X |
11 3/4 |
66 1/4 |
| Y |
12 1/4 |
67 1/2 |
| Z |
12 3/4 |
68 3/4 |