Ring Sizes - an International Guide

Ring sizes can be a bit a mine-field, but if you have an existing ring to measure against, or know your international ring-size, hopefully our International Guide will help. If needed, the inside diameter measurements below can be found using a tape measure, and if you are really stuck or struggling to guess someone else's size- just ask us! We'll do our best to help you figure it out.

(At Ora Gems, we use Australian ring sizes. If you are an international customer, please take note of the internal diameter measurements).

Jewelery Size (Australia / UK) Inside Diameter (mm) USA / Canada Size
D 13.1
D 1/2 13.3 2
E 13.5
E 1/2 13.7 2.5
F 13.9
F 1/2 14.1 3
G 14.3
G 1/2 14.5 3 1/2
H 14.7
H 1/2 14.9 4
I 15.1
I 1/2 15.3 4 1/2
J 15.5
J 1/2 15.7 5
K 15.9
K 1/2 16.1 5 1/2
L 16.3
L 1/2 16.5 6
M 16.7
M 1/2 16.9 6 1/2
N 17.1
N 1/2 17.3 7
O 17.5
O 1/2 17.7 7 1/2
P 17.9
P 1/2 18.1 8
Q 18.3
Q 1/2 18.5 8 1/2
R 18.8
R 1/2 19 9
S 19.2
S 1/2 19.4 9 1/2
T 19.6
T 1/2 19.8 10
U 20
U 1/2 20.2 1O 1/2
V 20.4
V 1/2 20.6 11
W 20.8
W 1/2 21 11 1/2
X 21.2
X 1/2 21.4 12
Y 21.6
Y 1/2 21.8 12 1/2
Z 22
Z 1/2 22.2 13
Z+1 22.4
Z+1 1/2 22.6 13 1/2
Z+2 22.8
Z+2 1/2 23.95 14
Z+3 23.15

 

As all our pieces at Ora Gems are handmade to order, we can customise your piece to suit your exact size (unless otherwise noted). However we do offer standardised sizing options which you can use as a guide:

Small | AUS size L 
Medium | AUS size N 
Large | AUS size P 

Should you require a custom size, please drop us a message alongside your order. Please take care when specifying your size, however if the wrong size is ordered and the final piece requires resizing, Ora will happily re-size 1 size up or down free of charge. 

Please note, for men' rings or wide, cuff styles, half a size should be added to the measured size ensure that it fits well taking into account the surface area of the ring.  

SPEAK WITH OUR HEAD DESIGNER

Where to start?
Drop us a message or whatsapp to book in for a design consultation and we’ll talk you through our simple process.

Whatsapp our Head Designer Ed:
+61 (0) 411 305 767