Our Guide to the Right Ring Size
At Fields the Jeweller, we consider ourselves to be the experts when it comes to rings, be it an engagement ring, a wedding ring or eternity ring, and we recognise that finding the perfect fit is extremely important.
With that in mind, the table below shows the inside circumference of each ring size. Please note that this is only a guide and that having your finger measured in any of our 13 nationwide showrooms is the most accurate way to find out your ring size.
Ireland/UK/Australia/SouthAfrica + US/Canada
|
Circumference (mm) |
Diameter (mm) |
Ireland / UK/ Australia / South Africa |
US / Canada |
|
44.2 |
14.1 |
F |
3 |
|
45.5 |
14.5 |
G |
3.5 |
|
46.8 |
14.9 |
H |
4 |
|
48 |
15.3 |
I |
4.5 |
|
48.7 |
15.5 |
J |
4.75 |
|
50 |
15.9 |
K |
5.25 |
|
51.2 |
16.3 |
L |
5.75 |
|
52.5 |
16.7 |
M |
6.25 |
|
53.8 |
17.1 |
N |
6.75 |
|
55.1 |
17.5 |
O |
7 |
|
56.3 |
17.9 |
P |
7.5 |
|
57.6 |
18.3 |
Q |
8 |
|
59.5 |
18.8 |
R |
8.5 |
|
60.2 |
19.2 |
S |
9 |
|
61.4 |
19.6 |
T |
9.75 |
|
62.7 |
20 |
U |
10.25 |
|
64 |
20.4 |
V |
10.75 |
|
65.3 |
20.8 |
W |
11.25 |
|
66.6 |
21.2 |
X |
11.75 |
|
67.8 |
21.4 |
Y |
12 |
|
68.5 |
21.6 |
Z |
12.5 |
France + Germany/Russia/Ukraine/Asia
|
Circumference (mm) |
Diameter (mm) |
France |
Germany/Russia/Ukraine/Asia |
|
44.2 |
14.1 |
44 |
14 |
|
45.5 |
14.5 |
45.25 |
14.5 |
|
46.8 |
14.9 |
46.5 |
15 |
|
48 |
15.3 |
47.75 |
15.25 |
|
48.7 |
15.5 |
48.375 |
15.5 |
|
50 |
15.9 |
19.625 |
16 |
|
51.2 |
16.3 |
50.875 |
-- |
|
52.5 |
16.7 |
52.125 |
16.75 |
|
53.8 |
17.1 |
53.375 |
-- |
|
55.1 |
17.5 |
54 |
17.25 |
|
56.3 |
17.9 |
55.25 |
17.75 |
|
57.6 |
18.3 |
56.5 |
-- |
|
59.5 |
18.8 |
57.75 |
18.5 |
|
60.2 |
19.2 |
59 |
19 |
|
61.4 |
19.6 |
60.875 |
-- |
|
62.7 |
20 |
62.125 |
20 |
|
64 |
20.4 |
63.375 |
20.5 |
|
65.3 |
20.8 |
64.625 |
-- |
|
66.6 |
21.2 |
65.875 |
21.25 |
|
67.8 |
21.4 |
Y66.5 |
21.5 |
|
68.5 |
21.6 |
67.75 |
21.75 |
India/China/Japan/South America/Turkey/Israel + Italy/Spain/Netherlands/Switzerland
|
Circumference (mm) |
Diameter (mm) |
Ireland / UK/ Australia / South Africa |
US / Canada |
|
44.2 |
14.1 |
4 |
4 |
|
45.5 |
14.5 |
5 |
5.25 |
|
46.8 |
14.9 |
7 |
6.5 |
|
48 |
15.3 |
8 |
7.75 |
|
48.7 |
15.5 |
-- |
8.375 |
|
50 |
15.9 |
-- |
9.625 |
|
51.2 |
16.3 |
11 |
10.875 |
|
52.5 |
16.7 |
-- |
12.125 |
|
53.8 |
17.1 |
-- |
13.375 |
|
55.1 |
17.5 |
14 |
14 |
|
56.3 |
17.9 |
15 |
15.25 |
|
57.6 |
18.3 |
16 |
16.5 |
|
59.5 |
18.8 |
17 |
17.75 |
|
60.2 |
19.2 |
18 |
19 |
|
61.4 |
19.6 |
-- |
20.875 |
|
62.7 |
20 |
21 |
22.125 |
|
64 |
20.4 |
-- |
23.375 |
|
65.3 |
20.8 |
-- |
24.625 |
|
66.6 |
21.2 |
-- |
25.875 |
|
67.8 |
21.4 |
25 |
26.5 |
|
68.5 |
21.6 |
26 |
27.5 |
The thicker the ring, the tighter the fit. If your ring of choice has a thick band you may need to go up a size up.
Your fingers are the largest in the evening, therefore this makes for the best time of day to measure your finger size. Avoid measuring when you’re cold, as fingers tend to be at least half a size smaller.
We would always recommend measuring your ring finger before you purchase your rings, however we do recognise this is not always an option, especially when you are planning a surprise proposal. We stock many sizes for both ladies and men, however if we don’t have the size you need, we can special order it. One thing to note is that we unfortunately don’t do half sizes.