Size Studio
UK Ring Size W in US, EU and mm
A UK (and Australian) ring size W is about a US 11.25 and an EU 65, with an inside diameter of about 20.7 mm (65 mm around).
| US / CA | UK / AU | EU (ISO) | Japan | Inside diameter | Inside circumference |
|---|---|---|---|---|---|
| 11.25 | W | 65 | 24 | 20.7 mm | 65 mm |
Good to know
- EU (ISO) ring sizes are the inside circumference in millimetres. US sizes go up about 0.8 mm in diameter per whole size, UK letters about 0.4 mm.
- Fingers swell when warm. Measure at the end of the day, and go half a size up for wide bands.
Sizes either side
Smaller: VLarger: XOpen the full converterHow to measure yourself
Questions
What is ring size W in mm?
About 20.7 mm inside diameter, 65 mm around.
What is UK ring size W in US?
About US 11.25.
What is ring size W in EU?
EU 65.
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