Size Studio
Ring Size 4 in UK, EU and Inside Diameter (mm)
A US (and Canadian) ring size 4 is a UK H½ and an EU 47, with an inside diameter of about 14.9 mm (46.7 mm around).
| US / CA | UK / AU | EU (ISO) | Japan | Inside diameter | Inside circumference |
|---|---|---|---|---|---|
| 4 | H½ | 47 | 7 | 14.9 mm | 46.7 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: 3.5Larger: 4.5Open the full converterHow to measure yourself
Questions
What is ring size 4 in mm?
About 14.9 mm inside diameter, 46.7 mm around.
What is ring size 4 in UK?
UK H½.
What is ring size 4 in EU?
EU 47.
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