Size Studio
UK Ring Size M in US, EU and mm
A UK (and Australian) ring size M is about a US 6.25 and an EU 53, with an inside diameter of about 16.7 mm (52.5 mm around).
| US / CA | UK / AU | EU (ISO) | Japan | Inside diameter | Inside circumference |
|---|---|---|---|---|---|
| 6.25 | M | 53 | 12 | 16.7 mm | 52.5 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: LLarger: NOpen the full converterHow to measure yourself
Questions
What is ring size M in mm?
About 16.7 mm inside diameter, 52.5 mm around.
What is UK ring size M in US?
About US 6.25.
What is ring size M in EU?
EU 53.
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