Finger Sizing - Determining your ring size

The best way to do determine your finger size (or ring size) is to go to your local jeweller and have them measure it for you. All shopping centres have chain store jewellers. Ensure that the jeweller uses a ring sizer of similar width to the ring you are interested in. For example if you are looking for a 6mm wide ring and you have your finger sized with a 3mm wide sizer you may get the false impression of comfort and then when you buy the ring it will feel a bit tight. So if you are buying a narrow ring have your finger size measured with a narrow sizer, if you are buying a ring of 5mm or more have your finger size measured with a wide sizer if possible, or allow an extra half size.

Alternatively, all you need is a ruler and one of your rings that fit on the same finger you want to buy the new ring for. Measure the inside diameter of the ring in millimetres and then use this measurement when selecting finger size on the drop down box.

For example, the ring below has an inside diameter of 21mm.

Ring Sizing

Ring Finger Size Conversion Chart

AU/UK	USA	ID(mm)
A	1/2	12
A 1/2	3/4	12.2
B	1	12.4
B 1/2	1 1/4	12.6
C	1 1/2	12.9
C 1/2	1 3/4	13.1
D	2	13.3
D 1/2	2 1/4	13.5
E	2 1/2	13.7
E 1/2	2 3/4	13.9
F	3	14.1
F 1/2	3 1/4	14.3
G	3 1/2	14.5
G 1/2	3 3/4	14.7
H	4	14.9
H 1/2	4 1/4	15.1
I	4 1/2	15.3
I 1/2	4 3/4	15.4
J	4 3/4	15.5
J 1/2	5	15.7
K	5 1/4	15.9
K 1/2	5 1/2	16.1
L	5 3/4	16.3
L 1/2	6	16.5
M	6 1/4	16.7
M 1/2	6 1/2	16.9
N	6 3/4	17.1
N 1/2	7	17.3
O	7 1/4	17.5
O 1/2	7 1/2	17.7
P	7 3/4	17.9
P 1/2	8	18.1
Q	8 1/4	18.3
Q 1/2	8 1/2	18.5
R	8 3/4	18.7
R 1/2	9	18.9
S	9 1/4	19.2
S 1/2	9 1/2	19.4
T	9 3/4	19.6
T 1/2	10	19.8
U	10 1/4	20
U 1/2	10 1/2	20.2
V	10 3/4	20.4
V 1/2	11	20.6
W	11 1/4	20.8
W 1/2	11 1/2	21
X	11 3/4	21.2
X 1/2	12	21.4
Y	12 1/4	21.6
Z	12 1/2	21.8
Z 1/2	12 3/4	22
	13	22.2
Z1	13 1/4	22.4
	13 1/2	22.6
Z2	13 3/4	22.8
Z3	14	23
	14 1/4	23.2
Z4	14 1/2	23.4
	14 3/4	23.6
	15	23.8
	15 1/4	24
	15 1/2	24.2
	15 3/4	24.4
	16	24.6