Ring Size Converter → Chart → US size 9
US Ring Size 9
A US/Canada ring size 9 converts as follows across every major standard.
UK / AustraliaR½
Europe (ISO)59½
Japan18
Diameter19.0 mm
Diameter0.75 in
Circumference59.5 mm
Not sure size 9 is right? Measure your finger or use the converter to check from a measurement.
Size 9 in context
| US | UK | EU | Japan | Diameter (mm) |
|---|---|---|---|---|
| 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 |
| 10 | T½ | 62 | 20 | 19.8 |
FAQ
What is a US size 9 ring in UK sizes?
A US ring size 9 is a UK/Australia size R½. It also equals European size 59½ and Japanese size 18.
What is the diameter of a size 9 ring?
A US size 9 ring has an inside diameter of 19.0 mm (0.75 inches) and an inside circumference of 59.5 mm.
Is a size 9 ring big or small?
Size 9 is on the larger side and common for men.