Size Studio
Ring Size 3 in UK, EU and Inside Diameter (mm)
A US (and Canadian) ring size 3 is a UK F½ and an EU 44, with an inside diameter of about 14.1 mm (44.2 mm around).
| US / CA | UK / AU | EU (ISO) | Japan | Inside diameter | Inside circumference |
|---|---|---|---|---|---|
| 3 | F½ | 44 | 4 | 14.1 mm | 44.2 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
Larger: 3.5Open the full converterHow to measure yourself
Questions
What is ring size 3 in mm?
About 14.1 mm inside diameter, 44.2 mm around.
What is ring size 3 in UK?
UK F½.
What is ring size 3 in EU?
EU 44.
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