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Ring size 6 in mm and international sizes
A US/Canadian size 6 ring is 16.5 mm across the inside and 51.9 mm around. This sits in the most commonly sold range for women's rings, according to jeweler sizing guides.
- US / Canada
- 6
- UK / Australia
- L½
- EU / ISO
- 52
- Japan / China
- 11
- India
- 12
- Italy / Spain / CH
- 12
- Inside diameter
- 16.5 mm
- Circumference
- 51.9 mm
- Diameter (in)
- 0.650″
Size 6 and its neighbours
| US | UK | EU | Japan | Diameter | Circumference |
|---|---|---|---|---|---|
| 5½ | K½ | 51 | 10 | 16.10 mm | 50.6 mm |
| 5¾ | L | 51 | 10 | 16.30 mm | 51.2 mm |
| 6 | L½ | 52 | 11 | 16.51 mm | 51.9 mm |
| 6¼ | M | 52 | 12 | 16.71 mm | 52.5 mm |
| 6½ | M½ | 53 | 13 | 16.91 mm | 53.1 mm |
Check it's really your size
A strip of paper wrapped around your finger should measure 51–53 mm for a size 6. If you're buying a band 6 mm or wider, consider size 6½ instead. Not sure? Try the ring size calculator or the online sizer.
Questions people ask
What is ring size 6 in mm?
A US size 6 ring has an inside diameter of 16.5 mm (0.650 in) and an inside circumference of 51.9 mm.
What is a US 6 in UK and European sizes?
US 6 is UK/Australian L½ and EU (ISO) 52. In Italy, Spain and Switzerland it is 12.
What is a US 6 in Japanese sizes?
The nearest Japanese and Chinese size is 11.
How do I know if I'm a size 6?
Wrap a paper strip around your finger: if it measures about 52 mm, you're a 6. Or measure a ring that fits: about 16.5 mm across the inside.