RING SIZE

Determining Your Ring Size

Jewellery Store

The best way to do determine your Ring Size is to go to your local jeweller and have them measure it for you. All shopping centres have chain jewellery stores. Ensure that the jeweller or salesperson 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 ring size measured with a 3mm wide ring 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 ring size measured with a narrow ring sizer, if you are buying a ring of 5mm or more have your ring size measured with a wide ring sizer if possible, or allow an extra half size.

Ruler

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 to read the corresponding Australian/UK ring size from the table below, or send us an email and we will convert it.

For example, the ring pictured here has an inside diameter (id) of 21mm so the closest corrresponding ring size is size "X".

Plastic Ring Sizing Guage

If you are unable to go to a Jeweller or to use the above method to determine the correct ring sizing then simply email us your name and postal address and we will post out a free plastic ring sizer as pictured to the right.:

Keep in mind that our fingers can swell and shrink during the course of the day. The measurement can be affected by the ambient temperature, whether you have been very active, your hydration levels etc.  So it's best to take a few measurements at different times of the day and even on different days eg a hot day and a cold day.

Ring Size Conversion Chart

The following chart illustrates the US equivalent to UK/AUS ring sizes. You can also use the inside diameter (ID) to determine your ring size.

Note that the following diameters are exact for the AUS/UK system but approximate for the US system as there is not always an exact corresponding diameter between the two systems.

AUS/UK	US	ID (mm)
A	1/2	11.9
A 1/2		12.1
B	3/4	12.3
B 1/2	1	12.5
C	1 1/4	12.7
C 1/2	1 1/2	12.9
D	1 3/4	13.1
D 1/2	2	13.3
E	2 1/4	13.5
E 1/2	2 1/2	13.7
F	2 3/4	13.9
F 1/2	3	14.1
G	3 1/4	14.3
G 1/2	3 1/2	14.5
H	3 3/4	14.7
H 1/2	4	14.9
I	4 1/4	15.1
I 1/2	4 1/2	15.3
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	19.1
S 1/2	9 1/2	19.3
T	9 3/4	19.5
T 1/2	10	19.7
U	10 1/4	19.9
U  1/2	10 1/2	20.1
V	10 3/4	20.3
V 1/2	11	20.5
W	11 1/4	20.7
W 1/2	11 1/2	20.9
X	11 3/4	21.1
X 1/2	12	21.3
Y	12 1/4	21.5
Y 1/2		21.7
Z	12 1/2	21.9
Z 1/2	12 3/4	22.1
Z1	13	22.3
Z1 1/2	13 1/4	22.5
Z2	13 1/2	22.7
Z2 1/2	13 3/4	22.9
Z3	14	23.1
Z3 1/2	14 1/4	23.3
Z4	14 1/2	23.5
Z4 1/2	14 3/4	23.7
Z5	15	23.9
Z5 1/2	15 1/4	24.1
Z6	15 1/2	24.3
Z6 1/2	15 3/4	24.5
Z7	16	24.7
Z7 1/2	16 1/4	24.9

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