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Ring size 7 in mm and international sizes
A US/Canadian size 7 ring is 17.3 mm across the inside and 54.4 mm around. This sits in the most commonly sold range for women's rings, according to jeweler sizing guides.
- US / Canada
- 7
- UK / Australia
- N½
- EU / ISO
- 54
- Japan / China
- 14
- India
- 14
- Italy / Spain / CH
- 14
- Inside diameter
- 17.3 mm
- Circumference
- 54.4 mm
- Diameter (in)
- 0.682″
Size 7 and its neighbours
| US | UK | EU | Japan | Diameter | Circumference |
|---|---|---|---|---|---|
| 6½ | M½ | 53 | 13 | 16.91 mm | 53.1 mm |
| 6¾ | N | 54 | 13 | 17.12 mm | 53.8 mm |
| 7 | N½ | 54 | 14 | 17.32 mm | 54.4 mm |
| 7¼ | O | 55 | 14 | 17.52 mm | 55.0 mm |
| 7½ | O½ | 56 | 15 | 17.73 mm | 55.7 mm |
Check it's really your size
A strip of paper wrapped around your finger should measure 53–56 mm for a size 7. If you're buying a band 6 mm or wider, consider size 7½ instead. Not sure? Try the ring size calculator or the online sizer.
Questions people ask
What is ring size 7 in mm?
A US size 7 ring has an inside diameter of 17.3 mm (0.682 in) and an inside circumference of 54.4 mm.
What is a US 7 in UK and European sizes?
US 7 is UK/Australian N½ and EU (ISO) 54. In Italy, Spain and Switzerland it is 14.
What is a US 7 in Japanese sizes?
The nearest Japanese and Chinese size is 14.
How do I know if I'm a size 7?
Wrap a paper strip around your finger: if it measures about 54 mm, you're a 7. Or measure a ring that fits: about 17.3 mm across the inside.