Ring Size Converter → Chart → US size 10.5
US Ring Size 10.5
A US/Canada ring size 10.5 converts as follows across every major standard.
UK / AustraliaU½
Europe (ISO)63½
Japan22
Diameter20.2 mm
Diameter0.80 in
Circumference63.5 mm
Not sure size 10.5 is right? Measure your finger or use the converter to check from a measurement.
Size 10.5 in context
| US | UK | EU | Japan | Diameter (mm) |
|---|---|---|---|---|
| 9.5 | S½ | 61 | 19 | 19.4 |
| 10 | T½ | 62 | 20 | 19.8 |
| 10.5 ← | U½ | 63½ | 22 | 20.2 |
| 11 | V½ | 65 | 23 | 20.6 |
| 11.5 | W½ | 66 | 24 | 21.0 |
FAQ
What is a US size 10.5 ring in UK sizes?
A US ring size 10.5 is a UK/Australia size U½. It also equals European size 63½ and Japanese size 22.
What is the diameter of a size 10.5 ring?
A US size 10.5 ring has an inside diameter of 20.2 mm (0.80 inches) and an inside circumference of 63.5 mm.
Is a size 10.5 ring big or small?
Size 10.5 is on the larger side and common for men.