US Ring Size 10 in mm (Diameter & Circumference)
US ring size 10 = 19.76 mm inner diameter, 62.1 mm circumference (UK T½, EU 62, JP 20)
| US/CA | UK/AU | EU/ISO | JP | Diameter | Circumference |
|---|---|---|---|---|---|
| 9 | R½ | 59.5 | 18 | 18.95 mm | 59.5 mm |
| 9.5 | S½ | 61 | 19 | 19.35 mm | 60.8 mm |
| 10 | T½ | 62 | 20 | 19.76 mm | 62.1 mm |
| 10.5 | U½ | 63.5 | 22 | 20.16 mm | 63.3 mm |
| 11 | V½ | 64.5 | 23 | 20.57 mm | 64.6 mm |
FAQ
What is ring size 10 in mm?
About 19.76 mm across the inside, 62.1 mm around.
What is US 10 in UK size?
About T½.
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.