Skip to main content
Black Friday Event - Up To 50% Off
Sign In
Goldsmiths Guide

How To Measure
Your Ring Size

Before you buy your forever ring, we recommend that you check your ring size. If you are unable to visit your nearest UK showroom where our experts can do this for you, the below gives guidance on a choice of two methods to use at home.

Measure a Finger
Measure a Ring
measure ring circumference 1

Step One

Decide which is the largest finger on which you will wear your ring. Using a narrow strip of paper, wrap it around the base of this finger.

measure ring circumference 1

Step Two

Ensure the paper has a tight fit to gain the most accurate result. Using a fine tip pen, clearly mark where the end of the paper meets the rest of the strip.

measure ring circumference 2

Step Three

Measure the length of paper to the point you have marked. This measurement is the circumference of your finger.

Download Printable Ring Sizer

For more help, please see our know & measure your ring size guide, where you will have the option to download and print our ring sizer pdf.

diameter step one

Step One

Choose a ring that fits your chosen finger comfortably.

diameter step two

Step Two

Lay the ring on top of a tape measure and measure the widest point of the ring, from each inner edge. Round up to the nearest millimetre.

diameter step three

Step Three

This measurement gives you the ring diameter. Use the ring size chart to determine your size by matching it to your ring diameter.

Find Your Ring Size Chart

Here at Goldsmiths, our ring sizes are specified in standard UK sizing. For ease, we have also illustrated the conversions to Europe, US and China sizing, to ensure that you choose the perfect size for you.

Circumference
Inside Diameter
Circumference Ring Size
(mm) UK Europe US China
37.8mm A - 1/2 -
39.1mm B - 1 -
40.4mm C - 1 1/2 -
41.7mm D 41 1/2 2 -
42.9mm E 42 3/4 2 1/2 -
44.2mm F 44 3 -
45.5mm G 45 1/4 3 3/8 -
46.8mm H 46 1/2 3 3/4 8
48.0mm I 47 3/4 4 1/4 9
48.7mm J 49 4 5/8 10
50.0mm K 50 5 1/8 11
51.2mm L 51 3/4 5 1/2 12
52.5mm M 52 3/4 6 13
53.8mm N 54 6 1/2 -
55.1mm O 55 1/4 7 -
56.3mm P 56 1/2 7 1/2 17
57.2mm Q 57 3/4 8 5/8 18
58.9mm R 59 8 5/8 19
60.2mm S 60 1/4 9 1/8 20
61.4mm T 61 1/2 9 5/8 21
62.7mm U 62 3/4 10 1/4 23
64.0mm V 63 10 5/8 24
65.3mm W 65 11 1/8 25
66.6mm X 66 1/4 11 5/8 26
67.8mm Y 67 1/2 12 27
68.5mm Z 68 3/4 12 1/2 28
Circumference
(mm)
37.8mm
39.1mm
40.4mm
41.7mm
42.9mm
44.2mm
45.5mm
46.8mm
48.0mm
48.7mm
50.0mm
51.2mm
52.5mm
53.8mm
55.1mm
56.3mm
57.2mm
58.9mm
60.2mm
61.4mm
62.7mm
64.0mm
65.3mm
66.6mm
67.8mm
68.5mm

Show More Sizes

Show Less Sizes

Inside Diameter Ring Size
(mm) UK Europe US China
11.9mm A - 1/2 -
12.3mm B - 1 -
12.7mm C - 1 1/2 -
13.1mm D 41 1/2 2 -
13.5mm E 42 3/4 2 1/2 -
13.9mm F 44 3 -
14.3mm G 45 1/4 3 3/8 -
14.7mm H 46 1/2 3 3/4 8
15.1mm I 47 3/4 4 1/4 9
15.5mm J 49 4 5/8 10
15.9mm K 50 5 1/8 11
16.3mm L 51 3/4 5 1/2 12
16.7mm M 52 3/4 6 13
17.1mm N 54 6 1/2 -
17.5mm O 55 1/4 7 -
17.9mm P 56 1/2 7 1/2 17
18.2mm Q 57 3/4 8 18
18.6mm R 59 8 5/8 19
19.1mm S 60.4 9 1/8 20
19.5mm T 61 1/2 9 5/8 21
20.0mm U 62 3/4 10 1/4 23
20.3mm V 63 10 5/8 24
20.7mm W 65 11 1/8 25
21.2mm X 66 1/4 11 5/8 26
21.5mm Y 67 1/2 12 27
21.9mm Z 68 3/4 12 1/2 28
Inside Diameter
(mm)
11.9mm
12.3mm
12.7mm
13.1mm
13.5mm
13.9mm
14.3mm
14.7mm
15.1mm
15.5mm
15.9mm
16.3mm
16.7mm
17.1mm
17.5mm
17.9mm
18.2mm
18.6mm
19.1mm
19.5mm
20.0mm
20.3mm
20.7mm
21.1mm
21.5mm
21.9mm

Show More Sizes

Show Less Sizes

Circumference Inside Diameter Ring Size
(mm) (mm) UK Europe US China
37.8mm 11.9mm A - 1/2 -
39.1mm 12.3mm B - 1 -
40.4mm 12.7mm C - 1 1/2 -
41.7mm 13.1mm D 41 1/2 2 -
42.9mm 13.5mm E 42 3/4 2 1/2 -
44.2mm 13.9mm F 44 3 -
45.5mm 14.3mm G 45 1/4 3 3/8 -
46.8mm 14.7mm H 46 1/2 3 3/4 8
48.0mm 15.1mm I 47 3/4 4 1/4 9
48.7mm 15.5mm J 49 4 5/8 10
50.0mm 15.9mm K 50 5 1/8 11
51.2mm 16.3mm L 51 3/4 5 1/2 12
52.5mm 16.7mm M 52 3/4 6 13
53.8mm 17.1mm N 54 6 1/2 -
55.1mm 17.5mm O 55 1/4 7 -
56.3mm 17.9mm P 56 1/2 7 1/2 17
57.2mm 18.2mm Q 57 3/4 8 18
58.9mm 18.6mm R 59 8 5/8 19
60.2mm 19.1mm S 60 1/4 9 1/8 20
61.4mm 19.5mm T 61 1/2 9 5/8 21
62.7mm 20.0mm U 62 3/4 10 1/4 23
64.0mm 20.3mm V 63 10 5/8 24
65.3mm 20.7mm W 65 11 1/8 25
66.6mm 21.1mm X 66 1/4 11 5/8 26
67.8mm 21.5mm Y 67 1/2 12 27
68.5mm 21.5mm Z 68 3/4 12 28

Show More Sizes

Show Less Sizes

Measuring Tips

  • The best time of day to measure your ring size in mm is in the evening, when your fingers are largest. Avoid measuring when you’re cold, as fingers are at least half a size smaller.
  • When measuring your finger or ring, always round up to the nearest millimetre.
  • The thicker the ring, the tighter the fit, so if you choose a ring with a deep band width, you will likely need to go up one size.
  • If you are considering a stackable ring, you may desire a looser fit, in which case we recommend you choose one size up from your measured ring size.
ring measuring tips
Discover

Our Ring Collections

Engagement Rings
Shop Engagement Rings
Wedding Rings
Shop Wedding Rings
eternity rings
Shop Eternity Rings
Shop All Rings
Shop All Rings
Back To Top
Trustpilot

© 2024 Goldsmiths

Goldsmiths is a trading name of Watches of Switzerland Company Limited. Registered Office: Aurum House, 2 Elland Road, Braunstone, Leicester, LE3 1TT, Registered in England and Wales, Company number 00146087. Registered VAT Number 834 8634 04. Watches of Switzerland Company Limited acts as a broker and not a lender and offers finance from Secure Trust Bank PLC trading as V12 Retail Finance and PayPal UK Ltd, Whittaker House, Whittaker Avenue, Richmond-Upon-Thames, Surrey, United Kingdom, TW9 1EH trading as PayPal Credit. Watches of Switzerland Company Limited is authorised and regulated by the Finance Conduct Authority. Our registration number is 308710. Credit provided is subject to age and status, minimum spend applies. Terms and Conditions apply. UK residents only. We may receive a commission if your application is successful, and the amount may vary depending on the product chosen and the amount of credit taken out. Not all products are regulated by the Financial Conduct Authority and FOS protection will not be extended to unregulated agreements. Please note the Consumer Credit Act states that should your purchase / loan amount cost more than £30,000 you will not be covered under Section 75 of the Consumer Credit Act.

*Next day delivery available on most items. See product pages for more information.

Go to Watches of Switzerland UK website Go to Mappin and Webb website Go To Goldsmiths Website Go To Mayors Website
Great Place To Work Badge