Size Studio
Ring Size 5 in UK, EU and Inside Diameter (mm)
A US (and Canadian) ring size 5 is a UK J½ and an EU 49, with an inside diameter of about 15.7 mm (49.3 mm around).
| US / CA | UK / AU | EU (ISO) | Japan | Inside diameter | Inside circumference |
|---|---|---|---|---|---|
| 5 | J½ | 49 | 9 | 15.7 mm | 49.3 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: 4.5Larger: 5.5Open the full converterHow to measure yourself
Questions
What is ring size 5 in mm?
About 15.7 mm inside diameter, 49.3 mm around.
What is ring size 5 in UK?
UK J½.
What is ring size 5 in EU?
EU 49.
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