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Article: Rings Size Guide UK

Rings Size Guide UK

Rings Size Guide UK

How do rings size work? Ring sizes have a scale of A to Z. So, A is the smallest size, and Z is the largest. Each letter represents the circumference of the ring in mm. Most jewellers offer half sizes so that you can get the most accurate and comfortable fit.

Circumference
Diameter
UK Rings Size US Rings Size EU Rings Size
C: 37.8 mm
D: 12.0 mm
A 1/2 -
C: 39.1 mm
D: 12.4 mm
B 1 -
C: 40.4 mm
D: 12.8 mm
C 1 1/2 40 1/2
C: 41.7 mm
D: 13.2 mm
D 2 41 1/2
C: 42.9 mm
D: 13.6 mm
E 2 1/2 42 3/4
C: 44.2 mm
D: 14.1mm
F 3 44
C: 45.5 mm
D: 14.4 mm
G 3 1/2 45 1/4
C: 46.8 mm
D: 14.8 mm
H 4 46 1/2
C: 48.0 mm
D: 15.2 mm
I 4 1/2 47 1/8
C: 48.7 mm
D: 15.4 mm
J 4 3/4 48 3/8
C: 50.0 mm
D: 15.9 mm
K 5 1/4 49 5/8
C: 51.2 mm
D: 16.3 mm
L 5 3/4 50 7/8
C: 52.5 mm
D: 16.7 mm
M 6 1/4 52 1/8
C: 53.8 mm
D: 17.1 mm
N 6 3/4 53 3/8
C: 55.1 mm
D: 17.5 mm
O 7 54 5/8
C: 56.3 mm
D: 17.9 mm
P 7 1/2 55 7/8
C: 57.6 mm
D: 18.3 mm
Q 8 57 1/8
C: 58.9 mm
D: 18.7 mm
R 8 1/2 58 3/8
C: 60.2 mm
D: 19.1 mm
S 9 59 5/8
C: 61.4 mm
D: 19.5 mm
T 9 3/4 60 7/8
C: 62.7 mm
D: 19.9 mm
U 10 1/4 62 1/8
C: 64.0 mm
D: 20.3 mm
V 6 3/4 63 3/8
C: 65.3 mm
D: 20.7 mm
W 11 1/4 64 5/8
C: 66.6 mm
D: 21.1 mm
X 11 3/4 65 7/8
C: 57.8 mm
D: 21.5 mm
Y 12 67 1/8
C: 68.5 mm
D: 21.7 mm
Z 12 1/2 67 3/4

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