Ring Sizes
The Ring Size Reality 

Rings are usually round and easily measured, but our fingers are a complex shape made of flesh and bone. Different portions of our fingers have different dimensions, and thus deciding on a ring size is a little more complex than just simply measuring one point. Our knuckle (joints) tend to be the determining factor on what ring will fit on the finger, however, the ring should feel comfortable in the position it is worn and not be too loose.

Other factors also play a role. Fingers sizes can change with temperature, humidity, exercise, nutrition, time of day, hand dominance, pregnancy or health issues.

 The best ring size is typically one that fits comfortably over the knuckle joint with a bit of resistance.  

Note that wide rings typically should be slightly larger than narrow rings.

Special note for those who will be wearing rings for the first time. Rings should not be chosen that are too loose, as the fingers adjust to wearing a ring and then the ring will be too loose and easily fall off and get lost.  
ringsizer@XaGeJacrystalJewelry.com

Determining Your Ring Size 

Our advice is:

  1. If you have a jeweler measure you finger, check at another jeweler to maker sure there are no differences. Look at the measurement tool yourself, and note any other sizes on it, and ask what measurement system (British, USA, etc.) the sizing tool is based on. Also if you are planning on getting a wide ring, find a jeweler that has a set of wide sizing rings.
  2. Email us at ringsizer@XaGeJaCrystalJewelry.com for a link for a FREE download of a ring measurement strips. These measurement strips can be printed and can be cut out for easy measurement of your fingers. 
  3.  If you measure your own finger, use a piece of paper at least 1/4” (6mm) wide (or wider if you plan on a wide ring). Wrap it around you finger where it is comfortable, and not too tight. Mark the length and measure to determine the size. Use our chart to determine your ring size.

          NOTE: Use the paper methods only as a guideline, as rings are round, and the paper will shape to your finger shape.

 
Ring Sizing Standards 

There are number of ring size standards in use around the world. Two main categories of standards are whether the sizes are based on the diameter or the circumference. Most of the sizes are based on the metric system, however ring sizes in the USA (Canada) are based on the old American Inch (1.02”).

 

Rings sizes based on Circumference

Region

Circumference

Comment

USA, Canada

in = ([US Size] x 0.102) +1.43

US sizes are divided into quarter sizes

UK, Ireland

mm = ([UK Size] x 1.25) + 36.25

UK sizes in alphabetic letters (A=1, B=2, C=3 etc.). UK sizes are divided into half sizes. (Based on UK Size C = 40 mm)

Europe

mm = [EU Size]

EU sizes use whole number sizes.

France

 

mm = [FR Size]

EU sizes but divided into quarter sizes.

Switzerland

mm = [CH Size] + 40

EU sizes less 40, divided into quarter sizes.

Rings sizes based on Diameters

Region

Diameter

Comment

Germany

mm = [DE Size]

DE sizes are divided into quarter sizes.

Japan

mm = ([JP Size] +38) / 3

JP Sizes use whole number sizes.

Ring Size Charts

Ring Sizes Based on Circumference

mm

in

UK

EU

USA

FR

CH

41

1.61

41

41

1

41.25

1.62

D

41.25

1.25

41.5

1.63

2

41.5

1.5

41.75

1.64

41.75

1.75

42

1.65

D 1/2

42

42

2

42.25

1.66

2.25

42.25

2.25

42.5

1.67

E

42.5

2.5

42.75

1.68

2.5

42.75

2.75

43

1.69

43

43

3

43.25

1.7

E 1/2

43.25

3.25

43.5

1.71

2.75

43.5

3.5

43.75

1.72

F

43.75

3.75

44

1.73

44

3

44

4

44.25

1.74

44.25

4.25

44.5

1.75

F 1/2

44.5

4.5

44.75

1.76

3.25

44.75

4.75

45

1.77

G

45

45

5

45.25

1.78

45.25

5.25

45.5

1.79

3.5

45.5

5.5

45.75

1.8

G 1/2

45.75

5.75

46

1.81

46

3.75

46

6

46.25

1.82

H

46.25

6.25

46.5

1.83

46.5

6.5

46.75

1.84

4

46.75

6.75

47

1.85

H 1/2

47

47

7

47.25

1.86

4.25

47.25

7.25

47.5

1.87

I

47.5

7.5

47.75

1.88

47.75

7.75

48

1.89

48

4.5

48

8

48.25

1.9

I 1/2

48.25

8.25

48.5

1.91

48.5

8.5

48.75

1.92

J

4.75

48.75

8.75

49

1.93

49

49

9

49.25

1.94

5

49.25

9.25

49.5

1.95

J 1/2

49.5

9.5

49.75

1.96

49.75

9.75

50

1.97

K

50

5.25

50

10

50.25

1.98

50.25

10.25

50.5

1.99

5.5

50.5

10.5

50.75

2

K 1/2

50.75

10.75

51

2.01

51

51

11

51.25

2.02

L

5.75

51.25

11.25

51.5

2.03

51.5

11.5

51.75

2.04

6

51.75

11.75

52

2.05

L 1/2

52

52

12

52.25

2.06

52.25

12.25

52.5

2.07

M

6.25

52.5

12.5

52.75

2.08

52.75

12.75

53

2.09

53

53

13

53.25

2.1

M 1/2

6.5

53.25

13.25

53.5

2.11

53.5

13.5

53.75

2.12

N

6.75

53.75

13.75

54

2.13

54

54

14

54.25

2.14

54.25

14.25

54.5

2.15

N 1/2

7

54.5

14.5

54.75

2.16

54.75

14.75

55

2.17

O

55

7.25

55

15

55.25

2.18

55.25

15.25

55.5

2.19

55.5

15.5

55.75

2.19

O 1/2

7.5

55.75

15.75

56

2.2

56

56

16

56.25

2.21

P

56.25

16.25

56.5

2.22

7.75

56.5

16.5

56.75

2.23

56.75

16.75

57

2.24

P 1/2

57

8

57

17

57.25

2.25

57.25

17.25

57.5

2.26

Q

57.5

17.5

57.75

2.27

8.25

57.75

17.75

58

2.28

58

58

18

58.25

2.29

Q 1/2

8.5

58.25

18.25

58.5

2.3

58.5

18.5

58.75

2.31

R

58.75

18.75

59

2.32

59

8.75

59

19

59.25

2.33

59.25

19.25

59.5

2.34

R 1/2

59.5

19.5

59.75

2.35

9

59.75

19.75

60

2.36

S

60

60

20

60.25

2.37

9.25

60.25

20.25

60.5

2.38

60.5

20.5

60.75

2.39

S 1/2

60.75

20.75

61

2.4

61

9.5

61

21

61.25

2.41

T

61.25

21.25

61.5

2.42

9.75

61.5

21.5

61.75

2.43

61.75

21.75

62

2.44

T 1/2

62

62

22

62.25

2.45

10

62.25

22.25

62.5

2.46

U

62.5

22.5

62.75

2.47

62.75

22.75

63

2.48

63

10.25

63

23

63.25

2.49

U 1/2

63.25

23.25

63.5

2.5

10.5

63.5

23.5

63.75

2.51

V

63.75

23.75

64

2.52

64

64

24

64.25

2.53

10.75

64.25

24.25

64.5

2.54

V 1/2

64.5

24.5

64.75

2.55

11

64.75

24.75

65

2.56

W

65

65

25

65.25

2.57

65.25

25.25

65.5

2.58

11.25

65.5

25.5

65.75

2.59

W 1/2

65.75

25.75

66

2.6

66

11.5

66

26

66.25

2.61

X

66.25

26.25

66.5

2.62

66.5

26.5

66.75

2.63

11.75

66.75

26.75

67

2.64

X 1/2

67

67

27

67.25

2.65

67.25

27.25

67.5

2.66

Y

12

67.5

27.5

67.75

2.67

67.75

27.75

68

2.68

68

12.25

68

28

68.25

2.69

Y 1/2

68.25

28.25

68.5

2.7

68.5

28.5

68.75

2.71

Z

12.5

68.75

28.75

69

2.72

69

69

29

69.25

2.73

12.75

69.25

29.25

69.5

2.74

Z 1/2

69.5

29.5

69.75

2.75

69.75

29.75

70

2.76

Z+1

70

13

70

30

70.25

2.77

70.25

30.25

70.5

2.78

70.5

30.5

70.75

2.79

Z+1 1/2

13.25

70.75

30.75

UK = United Kingdom and including Ireland, Austrailia, South Africa
EU = European Countries except as shown
USA = USA, Canada and Mexico
FR = France
CH = Switzerland

 

 

Ring Sizes Based on Diameter

mm

in

DE

JP

13.25

0.522

13.25

13.33

0.525

2

13.5

0.531

13.5

13.67

0.538

3

13.75

0.541

13.75

14

0.551

14

4

14.25

0.561

14.25

14.33

0.564

5

14.5

0.571

14.5

14.67

0.578

6

14.75

0.581

14.75

15

0.591

15

7

15.25

0.6

15.25

15.33

0.604

8

15.5

0.61

15.5

15.67

0.617

9

15.75

0.62

15.75

16

0.63

16

10

16.25

0.64

16.25

16.33

0.643

11

16.5

0.65

16.5

16.67

0.656

12

16.75

0.659

16.75

17

0.669

17

13

17.25

0.679

17.25

17.33

0.682

14

17.5

0.689

17.5

17.67

0.696

15

17.75

0.699

17.75

18

0.709

18

16

18.25

0.719

18.25

18.33

0.722

17

18.5

0.728

18.5

18.67

0.735

18

18.75

0.738

18.75

19

0.748

19

19

19.25

0.758

19.25

19.33

0.761

20

19.5

0.768

19.5

19.67

0.774

21

19.75

0.778

19.75

20

0.787

20

22

20.25

0.797

20.25

20.33

0.8

23

20.5

0.807

20.5

20.67

0.814

24

20.75

0.817

20.75

21

0.827

21

25

21.25

0.837

21.25

21.33

0.84

26

21.5

0.846

21.5

21.67

0.853

27

21.75

0.856

21.75

22

0.866

22

28

22.25

0.876

22.25

22.33

0.879

29

22.5

0.886

22.5

DE = Germany
JP = Japan

Caution on Charts, Measurements and Gauges There are many published lists of ring sizes, conversions, measurements and gauges that are not always in agreement. Discrepancies arise in the methods of measurement, quality of the measurement tools, and sometimes just honest mistakes. We have compiled our ring size chart after some extensive and conscientious research, which we use as the basis for all our jewelry.
Disclaimer
While we have made every effort in our research to ensure our information is correct, we make no claim as to the accuracy, completeness or correctness. Please feel free to contact us at xageja@xageja.com should there be any errors or ommissions or additions required.

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