EU to UK ring size
Convert a EU ring size to UK — instantly, and with the exact millimetre diameter so you can order with confidence.
You're between sizes (~US 6.84). We recommend sizing up to US 7 (UK N½) — a slightly loose ring is wearable, a stuck one is not.
Fit confidence Between sizes
Measurement confidence 60/100 · Medium The input falls between two orderable sizes, so the recommendation is rounded up. Use the between-sizes advisor or test the larger size before buying.
- US
- 7
- UK
- N½
- EU / ISO
- 54
- Japan
- 14
- CH / IT / ES
- 14
- Ø mm
- 17.32
- Circ mm
- 54.4
| US | UK | EU | JP | CH | Ø mm | Circ mm |
|---|---|---|---|---|---|---|
| 3 | F½ | 44 | 4 | 4 | 14.07 | 44.2 |
| 3.5 | G½ | 45 | 5 | 5 | 14.48 | 45.5 |
| 4 | H½ | 47 | 7 | 7 | 14.88 | 46.8 |
| 4.5 | I½ | 48 | 8 | 8 | 15.29 | 48.0 |
| 5 | J½ | 49 | 9 | 9 | 15.70 | 49.3 |
| 5.5 | K½ | 51 | 10 | 11 | 16.10 | 50.6 |
| 6 | L½ | 52 | 12 | 12 | 16.51 | 51.9 |
| 6.5 | M½ | 53 | 13 | 13 | 16.92 | 53.1 |
| 7 | N½ | 54 | 14 | 14 | 17.32 | 54.4 |
| 7.5 | O½ | 56 | 15 | 16 | 17.73 | 55.7 |
| 8 | P½ | 57 | 16 | 17 | 18.14 | 57.0 |
| 8.5 | Q½ | 58 | 17 | 18 | 18.54 | 58.3 |
| 9 | R½ | 60 | 18 | 20 | 18.95 | 59.5 |
| 9.5 | S½ | 61 | 19 | 21 | 19.35 | 60.8 |
| 10 | T½ | 62 | 20 | 22 | 19.76 | 62.1 |
| 10.5 | U½ | 63 | 22 | 23 | 20.17 | 63.4 |
| 11 | V½ | 65 | 23 | 25 | 20.57 | 64.6 |
| 11.5 | W½ | 66 | 24 | 26 | 20.98 | 65.9 |
| 12 | Y | 67 | 25 | 27 | 21.39 | 67.2 |
| 12.5 | Z | 68 | 26 | 28 | 21.79 | 68.5 |
| 13 | Z½ | 70 | 27 | 30 | 22.20 | 69.7 |
EU-to-UK conversion chart
| EU | UK | Ø mm | Circ mm |
|---|---|---|---|
| 44 | F½ | 14.07 | 44.2 |
| 45 | G½ | 14.48 | 45.5 |
| 47 | H½ | 14.88 | 46.8 |
| 48 | I½ | 15.29 | 48.0 |
| 49 | J½ | 15.70 | 49.3 |
| 51 | K½ | 16.10 | 50.6 |
| 52 | L½ | 16.51 | 51.9 |
| 53 | M½ | 16.92 | 53.1 |
| 54 | N½ | 17.32 | 54.4 |
| 56 | O½ | 17.73 | 55.7 |
| 57 | P½ | 18.14 | 57.0 |
| 58 | Q½ | 18.54 | 58.3 |
| 60 | R½ | 18.95 | 59.5 |
| 61 | S½ | 19.35 | 60.8 |
| 62 | T½ | 19.76 | 62.1 |
| 63 | U½ | 20.17 | 63.4 |
| 65 | V½ | 20.57 | 64.6 |
| 66 | W½ | 20.98 | 65.9 |
| 67 | Y | 21.39 | 67.2 |
| 68 | Z | 21.79 | 68.5 |
| 70 | Z½ | 22.20 | 69.7 |
Frequently asked questions
What is EU 54 in UK ring size?
EU 54 is UK N½ (inner diameter 17.32 mm, circumference 54.4 mm).
How do I convert a EU ring size to UK?
Enter your EU size in the converter above, or find it in the chart below and read across to the UK column. Both use one dataset verified against ISO 8653.
Are EU and UK ring sizes the same?
No — they use different scales, so the numbers do not match and must be converted. International equivalents are approximate; when possible, order by millimetre diameter.
Explore
See the full international ring size chart · Ring Size Conversions — All Systems & Sizes · EU→US