Ring Size Converter → Chart → US size 8.5
US Ring Size 8.5
A US/Canada ring size 8.5 converts as follows across every major standard.
UK / AustraliaQ½
Europe (ISO)58
Japan17
Diameter18.5 mm
Diameter0.73 in
Circumference58.3 mm
Not sure size 8.5 is right? Measure your finger or use the converter to check from a measurement.
Size 8.5 in context
| US | UK | EU | Japan | Diameter (mm) |
|---|---|---|---|---|
| 7.5 | O½ | 55½ | 14 | 17.7 |
| 8 | P½ | 57 | 16 | 18.1 |
| 8.5 ← | Q½ | 58 | 17 | 18.5 |
| 9 | R½ | 59½ | 18 | 19.0 |
| 9.5 | S½ | 61 | 19 | 19.4 |
FAQ
What is a US size 8.5 ring in UK sizes?
A US ring size 8.5 is a UK/Australia size Q½. It also equals European size 58 and Japanese size 17.
What is the diameter of a size 8.5 ring?
A US size 8.5 ring has an inside diameter of 18.5 mm (0.73 inches) and an inside circumference of 58.3 mm.
Is a size 8.5 ring big or small?
Size 8.5 is a mid-range size, common for women and smaller-fingered men.