EU ring size 56.5
EU size 56.5 is equivalent to US size 8, with an inside diameter of approximately 18.1 mm.
Inside diameter18.1 mm
Inside circumference57.0 mm
How to check EU size 56.5
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 18.1 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.