EU / ISO sizes
Every EU ring size
Under ISO 8653 the EU size number is the ring's inner circumference in millimetres — so EU 54 = 54 mm around. Pick a size to convert it to US, UK and Japan.
EU → US, UK, JP Each page converts one EU size to every other system, with exact millimetres.
Circumference, not diameter EU numbers count the inside circumference, which is why they look large.
Same source table Values mirror the canonical chart, so the numbers stay consistent everywhere.
By EU / ISO size
- EU 44 = US 3
- EU 45 = US 3.5
- EU 47 = US 4
- EU 48 = US 4.5
- EU 49 = US 5
- EU 51 = US 5.5
- EU 52 = US 6
- EU 53 = US 6.5
- EU 54 = US 7
- EU 56 = US 7.5
- EU 57 = US 8
- EU 58 = US 8.5
- EU 60 = US 9
- EU 61 = US 9.5
- EU 62 = US 10
- EU 63 = US 10.5
- EU 65 = US 11
- EU 66 = US 11.5
- EU 67 = US 12
- EU 68 = US 12.5
- EU 70 = US 13
Prefer US sizes? See every ring size or the full chart, or convert directly with the tool.