Ring Size Conversion Chart

Circumference (mm)

Diameter (mm)

UK

US

46.5mm

14.8mm

H ½

4 ½

48mm

15.2mm

I ½

5

49mm

15.6mm

J ½

5 ½

50.5mm

16mm

L

6

52mm

16.4mm

M

6 ½

53mm

16.8mm

N

7

54.5mm

17.3mm

O

7 ½

55.5mm

17.7mm

P

8

57mm

18.1mm

Q

8 ½

58mm

18.5mm

Q ½

9

59.5mm

18.9mm

R ½

9 ½

61mm

19.3mm

S ½

10

62mm

19.7mm

T ½

10 ½

63.5mm

20.1mm

U ½

11

64.5mm

20.6mm

V ½

11 ½

66mm

21mm

W ½

12

67.5mm

21.4mm

Y

12 ½

68.5mm

21.8mm

Z

13

70mm

22.2mm

Z+1

13 ½

71mm

22.6mm

Z+2

14

72.5mm

23mm

Z+3

14 ½

74mm

23.4mm

Z+4

15


Measuring Your Finger

We highly recommend you visit a local jeweller and have your finger measured professionally prior to purchase. However if you are happy to measure your finger yourself it can be done by taking a piece of string and wrapping it around the base of the appropriate finger.

Make a mark with a pen at the point the string joins and begins to overlap, and then measure this against a ruler in millimetres. This will provide you with the circumference measurement of this finger.

Please ensure you do not measure your fingers when they are particularly cold as your finger size will be smaller at this point.

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