Home / Ring size chart / Size 9½
Ring size 9½ in mm and international sizes
A US/Canadian size 9½ ring is 19.4 mm across the inside and 60.8 mm around. This range covers many men's rings and larger women's sizes.
- US / Canada
- 9½
- UK / Australia
- S½
- EU / ISO
- 61
- Japan / China
- 19
- India
- 21
- Italy / Spain / CH
- 21
- Inside diameter
- 19.4 mm
- Circumference
- 60.8 mm
- Diameter (in)
- 0.762″
Size 9½ and its neighbours
| US | UK | EU | Japan | Diameter | Circumference |
|---|---|---|---|---|---|
| 9 | R½ | 60 | 18 | 18.95 mm | 59.5 mm |
| 9¼ | S | 60 | 19 | 19.15 mm | 60.2 mm |
| 9½ | S½ | 61 | 19 | 19.35 mm | 60.8 mm |
| 9¾ | T | 61 | 19 | 19.55 mm | 61.4 mm |
| 10 | T½ | 62 | 20 | 19.76 mm | 62.1 mm |
Check it's really your size
A strip of paper wrapped around your finger should measure 59–62 mm for a size 9½. If you're buying a band 6 mm or wider, consider size 10 instead. Not sure? Try the ring size calculator or the online sizer.
Questions people ask
What is ring size 9½ in mm?
A US size 9½ ring has an inside diameter of 19.4 mm (0.762 in) and an inside circumference of 60.8 mm.
What is a US 9½ in UK and European sizes?
US 9½ is UK/Australian S½ and EU (ISO) 61. In Italy, Spain and Switzerland it is 21.
What is a US 9½ in Japanese sizes?
The nearest Japanese and Chinese size is 19.
How do I know if I'm a size 9½?
Wrap a paper strip around your finger: if it measures about 61 mm, you're a 9½. Or measure a ring that fits: about 19.4 mm across the inside.