Ring Size Guide and Chart - Free Ring Sizer

Finding the perfect size for your engagement, wedding, or diamond ring does not have to be frustrating. While professional advice is always invaluable, with a few tips, you can learn to navigate the puzzle of ring sizing from the comfort of your home. You might even discover your partner’s ring ahead of a surprise proposal. This comprehensive ring size guide from ABELINI is designed to simplify this process for you. Whether you’re sizing up your ring finger or an existing ring, we’ve streamlined the steps for your convenience. This is your ultimate home-based guide for obtaining the precise measurements for your diamond rings. Learn the ins and outs of correctly sizing your engagement, wedding, or diamond rings. Whether it’s a personal purchase or for a perfect proposal, we’ve got you covered.

Ring Size Chart UK

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Things To Keep In Mind While Measuring You Finger Size

Time & Temperature :

Measuring the ring in cold or in hot temperature will affect the ring size measurement. Also checking the finger size at the end of the day when it is largest is strongly recommended.

Ring Width :

Wider rings feel tighter than thinner rings. Choose a half size bigger for ring widths that are 4.0 mm or more.

Comfortable but Secure :

Ensure that your ring is secure but can easily slide over your knuckle and feels comfortable at all times.

Shape of Finger :

If your knuckle size is larger than average please make sure you keep in mind the need for a slightly larger size to ensure comfort.

So, how do ring sizes work? Ring sizes have a scale of A to Z. A is the smallest size, and Z is the largest. Each letter represents the circumference of the ring in mm. Most jewellers offer half sizes so that you can get the most accurate and comfortable fit.

UK Ring Size US Ring Size EU Ring Size
C: 37.8 mm
D: 12.0 mm
A 1/2 -
C: 39.1 mm
D: 12.4 mm
B 1 -
C: 40.4 mm
D: 12.8 mm
C 1 1/2 40 1/2
C: 41.7 mm
D: 13.2 mm
D 2 41 1/2
C: 42.9 mm
D: 13.6 mm
E 2 1/2 42 3/4
C: 44.2 mm
D: 14.1mm
F 3 44
C: 45.5 mm
D: 14.4 mm
G 3 1/2 45 1/4
C: 46.8 mm
D: 14.8 mm
H 4 46 1/2
C: 48.0 mm
D: 15.2 mm
I 4 1/2 47 1/8
C: 48.7 mm
D: 15.4 mm
J 4 3/4 48 3/8
C: 50.0 mm
D: 15.9 mm
K 5 1/4 49 5/8
C: 51.2 mm
D: 16.3 mm
L 5 3/4 50 7/8
C: 52.5 mm
D: 16.7 mm
M 6 1/4 52 1/8
C: 53.8 mm
D: 17.1 mm
N 6 3/4 53 3/8
C: 55.1 mm
D: 17.5 mm
O 7 54 5/8
C: 56.3 mm
D: 17.9 mm
P 7 1/2 55 7/8
C: 57.6 mm
D: 18.3 mm
Q 8 57 1/8
C: 58.9 mm
D: 18.7 mm
R 8 1/2 58 3/8
C: 60.2 mm
D: 19.1 mm
S 9 59 5/8
C: 61.4 mm
D: 19.5 mm
T 9 3/4 60 7/8
C: 62.7 mm
D: 19.9 mm
U 10 1/4 62 1/8
C: 64.0 mm
D: 20.3 mm
V 10 3/4 63 3/8
C: 65.3 mm
D: 20.7 mm
W 11 1/4 64 5/8
C: 66.6 mm
D: 21.1 mm
X 11 3/4 65 7/8
C: 57.8 mm
D: 21.5 mm
Y 12 67 1/8
C: 68.5 mm
D: 21.7 mm
Z 12 1/2 67 3/4


Choosing the right size is very important when you are buying a ring for that special day. We have put together two types of ring size tools for measuring ring sizes of UK, USA, Germany & France for Europe. We will also send printed ring size guide and international ring size conversion chart. Order Free Ring Sizer now.

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Ring Size Guide

We have put together two popular ring downloadable ring sizer tests. Simply download and print it 100%. It is very simple and easy to use and you can easily determine the ring size at home at your convenience. It will help you shop with confidence and you will be able to choose the right ring size.

Two Types of the most popular Ring Size Tests are provided in our Printable Ring Sizer.

Option A: The Paper Test
Cut our paper ring sizer tool and use it to estimate your ring size.

Option B: The Secret Test
Use the ring that you partner wears to find out the ring size. Simply place the ring on the right circle and determine ring size.

Please note that this is only a guide and will not take into account the style of the ring. For example, if you are choosing a ring with a deep band width, you may need a larger size.

Download Ring Size Guide

Ring Size FAQ

  • How do I figure out what my ring size is?

    Your best option is to visit a jeweller in person. They can offer a fitting and advise on sizes using their knowledge of how each ring is made. For example, a thicker band on a ring means it will have a tighter fit than normal. You will likely have to go up a size.

    You can also take a ring you already own and measure its inside circumference to get a general idea of what size you are looking for.

  • What are the most common ring sizes for a woman and a man in the UK?

    The average ring size for a woman in the UK is an L or M, which is an inside circumference between 51.2mm and 52.5mm. Predictably, it is larger for men and usually has an S or T, with an inside circumference between 60.2mm and 61.4mm.

  • How much does it cost to get your finger size?

    If you decide to go to a jeweller in person, getting your ring size is normally completely free. An expert can advise you on the size and how this will vary in warmer weather when fingers swell and in the cold when fingers are slimmer. If you know what type of ring you are looking for, they can also advise if you need a larger size to accommodate a wider band.

  • How can I measure my finger for a ring at home?

    Most jewellers offer downloadable sizers online. You can print the template and use it, but this is more of a rough estimate than if you go in-store. You can also buy professional ring sizers online, but it is always important to check this is a UK sizer.

    If you do choose to measure at home, it is best to do so at the end of the day, when your finger will be at its largest. This will make sure you get the most comfortable fit.


Don’t panic, many people do not get it right. Try to estimate or guess in the best possible way. At ABELINI, we offer one free resizing within 30 days. It means we will resize your ring or replace it free of cost as long as it is in pristine condition.

Please note that full eternity and bespoke rings cannot be resized.