Ring Size Guide
Your finger, a ring you own, or a size you know: US, UK and EU.
Find Your Size
- 1Wrap a thin strip of paper round the base of the finger.
- 2Mark where it meets, then lay it flat on a ruler.
- 3Enter the length in millimetres: measure at the end of the day.
42 mm72 mm
Lay a ring that fits on the circle and step it until the circle just shows inside the ring. Phones and zoomed screens are not to scale: check with a ruler.
16.6 mm
Your Size
US6UKL½EU52
- Inside Circumference51.9 mm
- Inside Diameter16.5 mm
Between two sizes we size up.
The Whole Run
Be Measured In A Boutique
US, UK & EU Ring Sizes
| US | UK | EU | Circumference | Diameter |
|---|---|---|---|---|
| 3 | F | 44 | 44.2 mm | 14.1 mm |
| 3.5 | G | 46 | 45.5 mm | 14.5 mm |
| 4 | H | 47 | 46.8 mm | 14.9 mm |
| 4.5 | I | 48 | 48.0 mm | 15.3 mm |
| 5 | J½ | 49 | 49.3 mm | 15.7 mm |
| 5.5 | K½ | 51 | 50.6 mm | 16.1 mm |
| 6 | L½ | 52 | 51.9 mm | 16.5 mm |
| 6.5 | M½ | 53 | 53.1 mm | 16.9 mm |
| 7 | N½ | 54 | 54.4 mm | 17.3 mm |
| 7.5 | O½ | 56 | 55.7 mm | 17.7 mm |
| 8 | P½ | 57 | 57.0 mm | 18.1 mm |
| 8.5 | Q½ | 58 | 58.2 mm | 18.5 mm |
| 9 | R½ | 60 | 59.5 mm | 18.9 mm |
| 9.5 | S½ | 61 | 60.8 mm | 19.4 mm |
| 10 | T½ | 62 | 62.1 mm | 19.8 mm |
| 10.5 | U½ | 63 | 63.3 mm | 20.1 mm |
| 11 | V½ | 65 | 64.6 mm | 20.6 mm |
| 11.5 | W½ | 66 | 65.9 mm | 21.0 mm |
| 12 | Y | 67 | 67.2 mm | 21.4 mm |
| 12.5 | Z | 69 | 68.5 mm | 21.8 mm |
| 13 | Z+1 | 70 | 69.7 mm | 22.2 mm |