EU ring size 54
EU size 54 is equivalent to US size 7, with an inside diameter of approximately 17.3 mm.
Inside diameter17.3 mm
Inside circumference54.4 mm
How to check EU size 54
Measure the inside diameter of a ring that already fits the intended finger. Measure straight across the widest inside point—do not include the metal. Compare that measurement with 17.3 mm.
This is a jewellery-size conversion, not a guarantee of fit. Finger size changes with temperature and time of day; wide bands often need extra room.