EU ring size 47 in US, UK & Japan
EU/ISO 47 denotes a nominal inner circumference of 47 mm. The nearest row in our chart is US 4, UK H½ and Japan 7: its calculated circumference is 46.8 mm and diameter is 14.88 mm. These are approximate chart equivalents, not identical dimensions.
- EU / ISO
- 47
- US / Canada
- 4
- UK / AU
- H½
- Japan
- 7
- CH / IT / ES
- 7
- Diameter
- 14.88 mm
- Circumference
- 46.8 mm
Under ISO 8653, the EU (and ISO) ring size number is the ring's inner circumference in millimetres. So EU 47 means the band measures about 47 mm all the way around — a circumference, not a diameter. That's why EU numbers are so much larger than US numbers for the same finger, and why an EU size can be read straight off a millimetre measurement.
Convert the other way with the EU to US ring size chart, open the US size 4 page, see the full chart, or use the converter.
Frequently asked questions
Why does EU 47 use a circumference number?
EU/ISO 47 follows the published circumference convention: about 47 mm around the inside (46.8 mm in this chart), corresponding to a 14.88 mm inner diameter.
How should I confirm EU 47 before ordering?
Check the retailer's own chart and confirm the 14.88 mm inner diameter with a physical sizer or a ring that already fits. Converted labels are a starting point, not a fit guarantee.
Values computed from the US jewellers’ diameter scale and cross-checked against ISO 8653 — methodology last reviewed 2026-08-27. Methodology