US Ring Size 4 in mm (Diameter & Circumference)
US ring size 4 = 14.88 mm inner diameter, 46.7 mm circumference (UK H½, EU 46.5, JP 7)
| US/CA | UK/AU | EU/ISO | JP | Diameter | Circumference |
|---|---|---|---|---|---|
| 3 | — | 44 | — | 14.07 mm | 44.2 mm |
| 3.5 | — | 45.5 | — | 14.47 mm | 45.5 mm |
| 4 | H½ | 46.5 | 7 | 14.88 mm | 46.7 mm |
| 4.5 | I½ | 48 | 8 | 15.29 mm | 48 mm |
| 5 | J½ | 49.5 | 9 | 15.69 mm | 49.3 mm |
FAQ
What is ring size 4 in mm?
About 14.88 mm across the inside, 46.7 mm around.
What is US 4 in UK size?
About H½.
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.