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Ring Size Guide

If you’ve read some of our previous engagement ring guides, you’ll know there is A LOT to consider when it comes to choosing an engagement ring. While the style and stone will provide that initial wow factor, it’s super important to get the ring size right so your other half can start showing off their new sparkler as soon as possible.

Getting the right ring size can be tricky. Each finger size varies from person to person – even if you’re treating yourself to a diamond ring, you may not know where to begin and what size to order.
To help, we’ve created a detailed ring size guide explaining how to measure your ring size at home. If you’re planning a surprise proposal, don’t worry; we’ve also covered how to secretly find out your partner’s ring size. Let’s get started…

measure your ring size at home

How to measure your ring size at home

Often, the easiest way to find out your ring size is to visit a jeweller who will be able to measure your finger for you. However, if you don’t have time or want to measure your own ring size at home, there are other options.

Use our printable ring sizer

Your first option is to download our printable ring sizer. Once printed, you can place an existing ring of yours that you know fits over the different sizes to find out which size your ring is. This is a great option if you’re trying to discreetly find out someone else’s ring size too.

ring size
Download Ring Sizer

How to use our printable ring sizer

Before you get started, make sure that the page scaling settings on your printer are set to "none" – this ensures that everything is printed as the correct size. Print on an A4 piece of paper.

  1. Select a ring that already fits the intended finger. Engagement and wedding rings are traditionally worn on the fourth finger on the left hand in many cultures.
  2. Place the ring over the circles on our ring sizer, matching the inside edge of the ring to the circle nearest in size. This measures the inside diameter of the ring.
  3. If the ring falls between two sizes, order the larger size.
  4. We recommend measuring your ring a few times to make sure it’s the right size.

2. Use our printable finger sizer

If you don’t have a ring that fits well on your chosen finger, you can always measure your finger instead with our printable finger sizer. It’s a simple and easy way to find out your ring size at home.

ring size
Download Finger Sizer

How to use our printable finger sizer

Before you print our finger belt sizer, check that your printing scaling settings are set to none and that the outer box on the diagram measures 170mm by 50mm. Once printed:

  1. Carefully cut out the sizer. Cut along the slit at the top so that you can connect it and slip it over your finger.
  2. Adjust the sizer so that it fits comfortably around the finger – not too tight and not too loose.
  3. Read the letter that the arrow points to – that is your ring size.
  4. Measure your finger several times to make sure you’ve got an accurate reading. As your finger can change size throughout the day, it’s wise to take your measurements at different times to make sure you get the right reading.

3. Use a tape measure

If you don’t have access to a printer, you could use a tape measure to measure your finger. To take a measurement, wrap the tape measure around your finger, being careful not to make it too tight.

Once you’ve taken your measurement in millimetres, you can use our ring size chart below to convert it to your ring size. We’ve included UK ring sizes along with Australia, Europe, US and Canada.

Ring size chart

Inside Circumference (MM)

Inside Diameter (MM)

UK and Australia

Europe

US and Canada

41

13.1

D

 

1.75

41.6

13.3

D 1/2

 

2

42.3

13.5

E

 

2.25

42.9

13.1

E 1/2

 

2.5

42.5

13.9

F

42.5

2.75

44.2

14.1

F 1/2

44

3

44.8

14.3

G

45

3.25

45.5

14.5

G 1/2

45.5

3.5

46.1

14.7

H

46

3.75

46.7

14.9

H 1/2

47

4

47.4

15.1

I

47.5

4.25

48

15.3

I 1/2

48

4.5

48.7

15.5

J

48.5

4.75

49.3

15.7

J 1/2

49

5

49.9

15.9

K

50

5.25

50.6

16.1

K 1/2

50.5

5.5

51.2

16.3

L

51

5.75

51.8

16.5

L 1/2

52

6

52.5

16.7

M

52.5

6.25

53.1

16.9

M 1/2

53

6.5

53.8

17.1

N

53.5

6.75

54.4

17.3

N 1/2

54

7

55

17.5

O

55

7.25

55.7

17.7

O 1/2

55.5

7.5

56.3

17.9

P

56

7.75

56.9

18.1

P 1/2

57

8

57.6

18.3

Q

57.5

8.25

58.2

18.5

Q 1/2

58

8.5

58.9

18.7

R

59

8.75

59.5

18.9

R 1/2

59.5

9

60.1

19.2

S

60

9.25

60.8

19.4

S 1/2

61

9.5

61.4

19.6

T

61.5

9.75

62.1

19.8

T 1/2

62

10

62.7

20

U

62.5

0.786

63.3

20.2

U 1/2

63

10.5

64

20.4

V

64

10.75

64.6

20.6

V 1/2

64.5

11

65.2

20.8

W

65

11.25

65.9

21

W 1/2

66

11.5

66.5

21.2

X

66.5

11.75

67.2

21.4

X 1/2

67

12

67.8

21.6

Y

67.5

12.25

68.4

21.8

Z

68

12.75

69.1

22

Z 1/2

69

13

-

-

Z1

70

13.25

70.3

22.4

Z2

70.5

13.5

-

-

Z3

71.5

13.75

71.6

22.8

Z4

72

14

 

Tips for measuring your ring size at home

If you are going to measure your ring size at home, take a look at our below tips to help you get an accurate measurement of your ring size.

Avoid using string or paper.

Contrary to popular belief, you should avoid using string or strips of paper to measure your ring size because these materials can stretch or twist, giving an inaccurate measurement.

Our printable finger sizers slot together to make taking a reading easier, but you should always make sure the paper isn’t twisted and is flat against your finger.

Choose a ring that already fits your chosen finger.

When measuring your ring, you should choose one that already fits your intended finger comfortably. It should fit well enough that it won’t fall off but also isn’t too tight and can slide over your knuckle when you want to remove it.

You can find out more about how an engagement ring should fit in our guide to ring resizing.

Measure your finger at the end of the day.

The size of your finger can change depending on the time of day and how warm it is. We advise that you measure your finger size at the end of the day or when your fingers are warm, as this is when they tend to be at their largest. Your fingers are smaller in the cold and morning.

Never measure when the weather’s warm.

Don’t measure your finger on a hot summer's day when your fingers have swollen. If you do, you could buy a ring that is too large. Once your fingers aren’t swollen, you’ll be left with a ring that is too large and needs to be resized.

If you need to find out your ring size in the summer, we recommend using our printable ring sizer to measure an existing ring that you know fits rather than measuring your finger which is prone to swelling.

measure your finger

Don’t just measure your finger once.

Measure your finger several times to make sure the reading is accurate. If you only take one reading, it’s possible that you could make a mistake which could lead to you purchasing the wrong ring size.

Take extra care if your ring has a stone in it.

If the ring you’re planning to buy has a stone like a diamond, it is even more important to get an accurate reading. If the ring is too loose, the weight of the stone will cause it to turn, which can be frustrating to wear and continuously adjust.

How to measure your partner’s ring size secretly

Planning a proposal and don’t want to spoil the surprise? Don’t worry; we’ve got you covered with our tips on how you can measure someone’s ring size without them knowing.

1. Measure one of their rings

You might have to do some light detective work to try and find out the right ring size. They likely have an existing ring they wear on their middle finger or ring finger of their right hand. If they take the ring off to sleep or don’t wear it all the time, you could use it to find out their ring size. Here’s how you do it:

  1. Take the ring to a jeweller to get it professionally measured. You’ll only be able to do this if they don’t always wear the ring.
  2. Buy a ring sizer tool and discreetly measure the size of the ring. These tools can be bought online and are usually affordable, although you’ll have to make sure your partner doesn’t find it!
  3. Trace the inside of the ring on some paper and take it to a jeweller for their professional opinion.
  4. Use our printable ring size guide (which you can download at the top of this guide) to determine which ring size you should buy. Place your partner’s ring over the different-sized circles on the page. The closest match to the ring’s diameter will give you an idea of their ring size.
  5. If you’re visiting a jeweller in store, you could try their ring on your own finger before you go and make a mark with pen on your finger to show where it fits on you. The jeweller should then be able to gauge the ring size you need.

measure ring size

2. Use the most popular ring size for men and women

If your partner doesn’t have rings for you to examine, you could buy them a ring in the average ring size.

Average engagement ring sizes UK

  1. For women, the average ring size is size ‘M’ in the UK and Australia, which is 52.5 in Europe, and 6.25 in the U.S. and Canada sizing.
  2. For men, ‘T’ is the average ring size in the UK and Australia, which is 62 in Europe, and 10 in U.S. and Canada.

It’s worth noting that this is a risky option. While the average is the most common ring size in the UK, there is every chance that your partner’s ring size may be larger or smaller than this. If you’re nervous about getting it wrong, we recommend exploring your other options ahead of this one.

3. Ask friends and family

While discretion is important, there’s no harm in asking your partner’s friends and family. They might have bought jewellery for them before or could give you an educated guess. Just make sure you ask people who you trust to keep your secret.

Better yet, if someone close to them recently got engaged, you can use this as an opportunity to have them discuss ring sizes with your partner and report back to you. They could even let your partner try on their engagement ring subtly, so you’ll have a ballpark idea of sizes.

4. Buy your partner another ring

Why don’t you consider buying your partner a cheaper ring, such as costume jewellery, to wear on the middle finger or ring finger of their other hand? While you still may not get their exact ring size, it will give you something to work with and an idea of how big their fingers are.

5. Invent a back story

Throw them off the scent by pretending you’re going to buy a ring for someone else you know, like your Mum or a friend. Doing so makes it easy to ask for advice on ring sizes and you could subtly drop into a conversation: “What ring size are you? Do you think your fingers are bigger or smaller than such and such?”
However, if this is something that is totally out of character for you, don’t do it! You’ll risk ruining the surprise and making your partner suspicious about what’s to come.

6. Compare their finger size to your own

It’s not the most accurate way to measure your partner’s ring size but it’s certainly discreet. Next time you’re holding hands, try to subtly see if their ring finger is a similar size to any of your ring fingers. Doing so can give you an idea of the sort of size ring you’re looking for.

7. Make note of their height and dress size

It may seem irrelevant but the things you already know about your partner can help you find them the perfect size ring. There’s a correlation between the height and dress size of a person and their finger size. Let the jeweller know and they should be able to suggest a common ring size based on their body type if you’re completely stuck.

If all else fails…

If you’re unsure, always go larger. This is because it’s easier to resize an engagement ring that is too big rather than too small.

If you choose a ring that doesn’t fit, don’t panic! Angelic Diamonds will replace your engagement ring at no extra cost for one that is perfectly matched to your other half with our ring resizing service.

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