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UK Ring Size Guide

Whether you are shopping for an engagement ring, wedding ring, or a ring for yourself; understanding ring sizes is essential to ensuring your new piece of jewellery fits properly.

A poorly fitted ring can be uncomfortable to wear if it’s too tight, or be more likely to slip off if it’s too loose, which could result in the ring being lost.

To help ensure your new ring is the perfect size, our expert jewellers at The Middle Green have created a UK ring size guide.

Ring Sizing Chart UK

In the UK, ring sizes range from A to Z. These sizes are based on the inside diameter and the circumference of the ring, measured in mm.

Ring Size Diameter (mm) Circumference (mm) Find Rings
A
12.04
37.8
Size A Rings
B
12.45
39.1
Size B Rings
C
12.85
40.4
Size C Rings
D
13.26
41.7
Size D Rings
E
13.67
41.7
Size E Rings
F
14.07
44.2
Size F Rings
G
14.48
45.5
Size G Rings
H
14.88
46.8
Size H Rings
I
15.29
48
Size I Rings
J
15.49
48.7
Size J Rings
K
15.9
50
Size K Rings
L
16.31
51.2
Size L Rings
M
16.71
52.5
Size M Rings
Ring Size Diameter (mm) Circumference (mm) Find Rings
N
17.12
53.8
Size N Rings
O
17.53
55.1
Size O Rings
P
17.93
56.3
Size P Rings
Q
18.34
57.6
Size Q Rings
R
18.75
58.9
Size R Rings
S
19.15
60.2
Size S Rings
T
19.56
61.4
Size T Rings
U
19.96
62.7
Size U Rings
V
20.37
64
Size V Rings
W
20.78
65.3
Size W Rings
X
21.18
66.6
Size X Rings
Y
21.59
67.8
Size Y Rings
Z
21.79
68.5
Size Z Rings

How to Measure Your Ring Size

Use these simple methods to get an accurate measurement of your ring size at home:
  • Use a Ring Sizer –
    Ring sizing tools are widely available and low cost. These useful tools can help you determine the ring size for each of your fingers.
  • Use an Existing Ring –
    If you have an existing ring, you can find out the size using the table above to ensure you purchase the correct size.
  • Use a DIY Measurement Tool –
    Using a piece of string or tailors’ tape can help you determine the circumference of your finger which can be converted into a ring size using the table above.

Tips for Measuring Your Ring Finger

Follow our top tips to ensure that you get the most accurate measurement of your ring finger:
  • Find the average –

    Your finger size can change throughout the day. Be sure to take several measurements to work out an average. 

  • Cold weather –

    Cold weather makes your fingers smaller, so avoid measuring your fingers when cold. 

  • Pick the right finger –

    Typically ring sizes differ between hands, so measure the exact finger you plan to wear the ring on.  

  • Large joints –

    If you have larger finger joints, take this into account when measuring. You may need to choose a slightly larger size to ensure the ring can fit over your joints. 

How To Find Your Partner’s Ring Size

If you want to secretly find your partner’s ring size to surprise them with a gift or a proposal, try these tips:
  • Use Existing Ring

    Measuring an existing ring that your partner has can give you an accurate size; just ensure they wear the ring of their wedding finger if you’re planning to propose!

  • Use Your Own Ring Size –

    Measuring your own ring size and trying your partner’s rings on can help you figure out what size ring they are.

  • Consider a Promise Ring –

    If you want to ensure the fit is perfect, consider gifting your partner a promise ring before getting their exact measurements for the wedding ring. 

FAQs

Can rings be made bigger or smaller?

If you do purchase a ring that is the wrong size, it can be possible to adjust the size to make it bigger or smaller. However, this will be dependent on the material and design of the ring.

Are ring sizes different for men and women?

While women often wear smaller ring sizes, the ring sizing system is unisex and does not differ between men and women

Can you get half sizes in rings?

Yes. Whilst most jewellers offer sizes ranging from A-Z, it is possible to get rings in half sizes. When choosing a bespoke ring, it will be made to your exact size for a perfect fit every time.

Do UK ring sizes differ from international sizes?

Yes, UK rings are sized using an alphabetical scale, in contrast to European sizing which uses a numerical scale based on circumference and U.S. and Canadian sizes, which use a numerical scale with half and quarter sizes.

Find the Perfect Fit with The Middle Green

Ready to find your perfect ring? At The Middle Green, we offer a curated collection of handmade rings including engagement rings, wedding rings, diamond rings, couples sets and so much more.

Explore our range of stunning rings suitable for any style and occasion now, all available to purchase online exclusively from our online shop.

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