US Ring Size 12.5 in mm (Diameter & Circumference)
US ring size 12.5 = 21.79 mm inner diameter, 68.5 mm circumference (UK Z, EU 68.5, JP 26)
| US/CA | UK/AU | EU/ISO | JP | Diameter | Circumference |
|---|---|---|---|---|---|
| 11.5 | W½ | 66 | 24 | 20.98 mm | 65.9 mm |
| 12 | X½ | 67 | 25 | 21.38 mm | 67.2 mm |
| 12.5 | Z | 68.5 | 26 | 21.79 mm | 68.5 mm |
| 13 | Z+1 | 69.5 | 27 | 22.2 mm | 69.7 mm |
FAQ
What is ring size 12.5 in mm?
About 21.79 mm across the inside, 68.5 mm around.
What is US 12.5 in UK size?
About Z.
Related
Sizes vary by brand and seller. Always check the product's own size chart and measure yourself; this chart is a general standard guide.