You may be able to find your ring size by measuring a ring you own that is a comfortable fit. If not, our guide below is on hand to take the guesswork out of ring shopping.

Alternatively, our jewellery experts are here to help. Speak with an expert or pop into one of our stores and we'll measure you on the spot.

Size Chart

UK	US	EU	⌀ Inside Diameter
E	2.5	42	⌀ 13.6mm
F	3	44	⌀ 14.0 mm
G	3.5	45	⌀ 14.5 mm
H	4	46.5	⌀ 15.0 mm
I	4.5	48	⌀ 15.3 mm
J	5	49.5	⌀ 15.6 mm
K	5.5	50.5	⌀ 16.2 mm
L	6	52	⌀ 16.6 mm
M	6.5	53	⌀ 16.9 mm
N	7	54.5	⌀ 17.2 mm
O	7.5	55.5	⌀ 17.8 mm
P	8	57	⌀ 18.1 mm
Q	8.5	58	⌀ 18.5 mm
R	9	59.5	⌀ 19.1 mm
S	9.5	61	⌀ 19.4 mm
T	10	62	⌀ 19.7 mm
U	10.5	63.5	⌀ 20.4 mm
V	11	64.5	⌀ 20.7 mm
W	11.5	66	⌀ 21.0 mm
X	12	67	⌀ 21.6 mm
Y	12.5	68.5	⌀ 22.0 mm
Z	13	69.5	⌀ 22.3 mm

If your size isn't currently available, please reach out to the team on enquiries@jessicamccormack.com as we offer a resizing service across a selection of our rings.