Ring Size Guide

Find your ring size with the information below: 

How do I measure my ring size?
‍The best and most accurate way to measure your ring size is to visit your local jeweller to have your ring finger fitted. 

To measure your ring size yourself, the free mobile app Ring Sizer – available on the App Store and Google Play – can help you estimate your ring size by matching your ring to its correct size. 

You can also send us a photo of your hand so that we can estimate your ring size. We offer a complimentary ring resize in the first instance at our London and Beirut locations, and any subsequent ring resizes are priced at £80. To determine an accurate ring size, we highly recommend getting your ring size measured by a je

If you have any questions about ring sizing, contact us at stories@patrickboghossian.com.
At Patrick Boghossian, we use standard UK ring sizes.

UK, IE, AUS

US, CA

Inside Diameter  
MM

Circumference 
MM

A

1/2

12. 04

37.82

B

1

12.45

39.11

B 1/2

1  1/4

12.65

39.74

C

1  1/2

12.85

40.37

C 1/2

1  3/4

13.06

41.03

D

2

13.26

41.66

D 1/2

2  1/4

13.46

42.29

E

2  1/2

13.67

42.94

E 1/2

2  3/4

13.87

43.57

F

3

14.07

44.20

F 1/2

3  1/4

14.27

44.83

G

3  1/2

14.48

45.49

G 1/2

3  3/4

14.68

46.12

H

4

14.88

46.75

H 1/2

4  1/4

15.09

47.40

I

4  1/2

15.29

48.03

I 1/2

4  5/8

15.39

48.35

J

4  3/4

15.49

48.66

J 1/2

5

15.7

49.32

K

5  1/4

15.9

49.95

K 1/2

5  1/2

16.11

50.61

L

5  3/4

16.31

51.24

L 1/2

6 

16.51

51.87

M

6  1/4 

16.71

52.50

M 1/2

6  1/2

6  1/2

53.15

N

6  3/4

17.12

53.78

N 1/2

7

17.32

54.41

O

7  1/4

17.53

55.07

O 1/2

7  1/2

17.73

55.70

P

7  3/4

17.93

56.33

P 1/2

8

18.14

56.99

Q

8  1/4

18.34

57.61

Q 1/2

8  1/2

18.54

58.24

R

8  3/4

18.75

58.90

R 1/2

9

18.95

59.53

S

9  1/4

19.15

60.16

S 1/2

9  1/2

19.35

60.79

T

9  3/4

19.56

61.44

T 1/2

10

19.76

62.08

U

10  1/4

19.96

62.70

U 1/2

10  1/2

20.17

63.36

V

10  3/4

20.37

63.99

V 1/2

11

20.57

64.62

W

11  1/4

20.78

65.28

W 1/2

11  1/2

20.98

65.91

X

11  3/4

21.18

66.54

X 1/2

12

21.39

67.20

Y

12  1/4

21.59

67.82

Y 1/2

12  3/8

21.69

68.14

Z

12  1/2

21.79

68.45

Z 1/2

12  3/4

22

69.11

Z + 1

13

22.2

69.74

Z + 1  1/2

13  1/4

22.4

70.37

Z + 2

13  1/2

22.61

71.03

Z + 2  1/2

13  3/4

22.8

71.63

Z + 3

14

23

72.25

Z + 3 1/2

14  1/4

23.2

72.89

Z + 4

14  1/2

23.41

73.54

Z + 4 1/2

14  3/4

23.61

74.17

Z + 5

15

23.81

74.80

Z + 5 1/2

15  1/4

24.01

75.42

Z + 6

15  1/2

24.21

76.06

Z + 6 1/2

15  3/4

24.41

76.68

Z + 7

16

24.61

77.31

Z + 7 1/2

16  1/4

24.8

77.91