How to Work Out Your Ring Size


Ring sizing systems vary around the world, and when it comes to getting your ring size right, it’s important to choose the right system for your country! For a ring size NZ, we use the British letter system, but the US uses a numbering system, France uses approximate circumferences, and other parts of Europe use diameter.

The best way to find your ring size is to go into your local jeweller and ask for help in sizing your finger. Your local jeweller, particularly independent small businesses, will be most happy to help you find the right size.

What if you’re buying a ring as a surprise for someone? One way to get around that problem is to quietly borrow one of their existing rings and take it into a jeweller, who will be able to tell you what size it is. You could also measure the diameter of an existing ring to get an idea of what size they are, although it needs to be done with some precision to get an accurate ring size. Another option is to take a guess based on their approximate hand size. Of course, once you have presented the lucky recipient with the ring, you can always resize it to fit them perfectly. Most good jewellers will do this first resize for free if you have purchased the ring from them.

Some online stores offer printable ring sizers, but we do not as it is very easy to make mistakes when trying to print these. We do, however, offer finger sizing services for free, and we will also resize any ring you buy from us for free the first time.

We also size to half sizes, which is useful if you are between sizes on the chart below.

Ring Sizing Chart

Inside Diameter
British/NZ Size
US size
12.04mm
A
1/2
12.45mm
B
1
12.85mm C 1 1/2
13.26mm D 2
13.67mm E 2 1/2
14.07mm F 3
14.48mm
G
3 1/2
14.88mm
H
4
15.29mm
I
4 1/2
15.49mm
J
4 3/4
15.90mm
K
5 1/4
16.31mm
L
5 3/4
16.71mm
M
6 1/4
17.12mm
N
6 3/4
17.53mm
O
7 1/4
17.93mm
P
7 3/4
18.34mm
Q
8 1/4
18.75mm
R
8 3/4
19.15mm
S
9 1/4
19.56mm
T
9 3/4
19.96mm
U
10 1/4
20.37mm
V
10 3/4
20.78mm
W
11 1/4
21.18mm
X
11 3/4
21.59mm
Y
12 1/4
21.79mm
Z
12 1/2

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