Ring Sizer
Please note this is a guide only based on a standard ring width. A wider ring will require a larger ring size.
UK SIZE |
EU SIZE |
DIAMETER |
F |
44 |
14.1mm |
F 1/2 |
45 |
14.3mm |
G |
46 |
14.5mm |
G 1/2 |
46 |
14.7mm |
H |
47 |
14.9mm |
H 1/2 |
47 |
15.1mm |
I |
48 |
15.3mm |
I 12 |
48 |
15.4mm |
J |
49 |
15.5mm |
J 1/2 |
49 |
15.7mm |
K |
50 |
15.9mm |
K 1/2 |
51 |
16.1mm |
L |
51 |
16.3mm |
L 1/2 |
52 |
16.5mm |
M |
53 |
16.7mm |
M 1/2 |
53 |
16.9mm |
N |
54 |
17.1mm |
N 1/2 |
55 |
17.3mm |
O |
55 |
17.5mm |
O 1/2 |
56 |
17.7mm |
P |
56 |
17.9mm |
P 1/2 |
57 |
18.1mm |
Q |
58 |
18.3mm |
Q 1/2 |
58 |
18.5mm |
R |
59 |
18.7mm |
R 1/2 |
60 |
19.0mm |
S |
60 |
19.2mm |
S 1/2 |
61 |
19.4mm |
T |
61 |
19.5mm |
T 1/2 |
62 |
19.8mm |
U |
63 |
20.0mm |
U 1/2 |
63 |
20.2mm |
V |
64 |
20.4mm |
V 1/2 |
65 |
20.6mm |
W |
65 |
20.8mm |
W 1/2 |
66 |
21.0mm |
X |
67 |
21.2mm |
X 1/2 |
67 |
21.4mm |
Y |
68 |
21.6mm |
Y 1/2 |
68 |
21.7mm |
Z |
69 |
21.8mm |
Z 1/2 |
69 |
22.0mm |