US Ring Size 5 in mm (Diameter & Circumference)

US ring size 5 = 15.69 mm inner diameter, 49.3 mm circumference (UK J½, EU 49.5, JP 9)

US/CAUK/AUEU/ISOJPDiameterCircumference
4H½46.5714.88 mm46.7 mm
4.5I½48815.29 mm48 mm
5J½49.5915.69 mm49.3 mm
5.5K½50.51016.1 mm50.6 mm
6L½521216.51 mm51.9 mm

FAQ

What is ring size 5 in mm?

About 15.69 mm across the inside, 49.3 mm around.

What is US 5 in UK size?

About J½.

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.