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 14 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.

Remember the above table is not an accurate measure of your ring finger and it should be used more as a guide, to obtain your true finger measurement please visit one of your 13 showrooms nationwide where are ring experts will be able to help you find the perfect fit.
While having the ring finger measured and sized for free in any one of our 13 Fields the Jeweller showrooms will provide the most accurate size; you can also gauge it in other ways (especially if planning a surprise proposal). Try to simply take a ring from their jewellery collection into one of our stores to be sized. Try also asking their friends and family if they know it - maybe they got them a ring as a present before? Please note that we offer free resizing within 30 days of purchase.