Kay Jewelers ring size guide
Kay Jewelers uses standard US ring sizing, usually in half steps. Your US size is your Kay size; the chart below adds UK, EU and millimetre equivalents.
- Published charts cross-checked
- No sign-up
- Mobile-first
- Reviewed sources
Your size is US 7 (UK N½, EU 54).
Fit confidence Exact table match
Fit confidence 70/100 · Medium Standard chart conversion; final fit still depends on band width and knuckle shape. Confirm with a printable or physical sizer before ordering an expensive ring.
- US
- 7
- UK
- N½
- EU / ISO
- 54
- Japan
- 14
- CH / IT / ES
- 14
- Inner diameter, millimetres
- 17.32
- Circ mm
- 54.4
Why this size?
Your input maps to US 7 — UK N½, EU 54, JP 14, Ø 17.32 mm.
Inner diameter is exact to about ±0.1 mm. String or on-screen methods add roughly ½–1 size of noise, so confirm with a second method before buying an expensive or non-resizable ring.
More options
Choose the fit problem and get the safest next step before resizing, replacing or buying another ring.
Too tight or stuck Too loose or spinning Wide band or comfort-fit Non-resizable or brand ring
| US | UK | EU | JP | CH | Inner diameter, millimetres | 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 |
How Kay Jewelers sizing works
Kay rings are sized in US numbers. Measure your US size and order it directly; many styles can be resized in store.
Fast conversion anchors
These common reference points come from the same table used by the converter.
| Brand size | US | UK | EU |
|---|---|---|---|
| 6 | 6 | L½ | 52 |
| 7 | 7 | N½ | 54 |
| 9 | 9 | R½ | 60 |
Wide-band size calculator
Estimate the order size for a wider band, then confirm before buying a non-resizable ring.
Kay Jewelers ring size chart
| Kay Jewelers (US) | UK | EU | Inner diameter, millimetres |
|---|---|---|---|
| 3 | F½ | 44 | 14.07 |
| 3.5 | G½ | 45 | 14.48 |
| 4 | H½ | 47 | 14.88 |
| 4.5 | I½ | 48 | 15.29 |
| 5 | J½ | 49 | 15.70 |
| 5.5 | K½ | 51 | 16.10 |
| 6 | L½ | 52 | 16.51 |
| 6.5 | M½ | 53 | 16.92 |
| 7 | N½ | 54 | 17.32 |
| 7.5 | O½ | 56 | 17.73 |
| 8 | P½ | 57 | 18.14 |
| 8.5 | Q½ | 58 | 18.54 |
| 9 | R½ | 60 | 18.95 |
| 9.5 | S½ | 61 | 19.35 |
| 10 | T½ | 62 | 19.76 |
| 10.5 | U½ | 63 | 20.17 |
| 11 | V½ | 65 | 20.57 |
| 11.5 | W½ | 66 | 20.98 |
| 12 | Y | 67 | 21.39 |
| 12.5 | Z | 68 | 21.79 |
| 13 | Z½ | 70 | 22.20 |
Frequently asked questions
Does Kay use US ring sizes?
Yes. Kay Jewelers uses standard US sizing in half steps. A Kay 7 is a US 7 (UK N½, EU 54).
Ringsizely is an independent ring size converter and is not affiliated with, endorsed by, or sponsored by Kay Jewelers. Brand names are used for identification only. Always confirm with the retailer before ordering a non-resizable ring.