Eternity Rings | Ring Size Guide


Choosing the right size ring can be difficult but follow our guide and helpful tips and tricks to find your perfect size.


UK size I / US size 4 / inside diameter 15mm

UK size J / US size 4.5 / inside diameter 15.4mm

UK size K / US size 5 / inside diameter 15.8mm

UK size L / US size 5.5 / inside diameter 16.2mm

UK size M / US size 6 / inside diameter 16.6mm

UK size N / US size 6.5 / inside diameter 17mm

UK size O / US size 7 / inside diameter 17.4mm

UK size P / US size 7.5 / inside diameter 17.8mm

UK size Q / US size 8 / inside diameter 18.2mm


The best time of day to measure your ring is in the evenings when your fingers are at their largest. 

Avoid measuring your fingers when they are cold, as they can shrink up to half a size in the cold. 

Consider the width of the band, the thicker the band the tighter the fight, so you may want to buy a full size larger than your normal ring size. 

Your ring should be loose enough to slide over your knuckle, but not so loose it will fall off. 


If you are still unsure about your ring size, why not order our free ring sizer.

If you have any questions or would like more information please get in touch, we'd love to hear from you and will help in whatever way we can: