How to find out the size of the ring

How to measure your ring size at home. Table of sizes used in our country and their conversion to ring diameter and other ring size designations in the world.

Do you know how to find out your ring size quickly? 

Ring sizes by finger circumference. And how to measure your finger circumference? Use string or cotton, wrap it around your finger where you wear the ring. Cross the string on the inside of your hand so that it wraps around your finger and mark the crossing point with a marker on both sides of the string. Then when you stretch the string there will be two dots on it, use a ruler to measure the distance between the dots to get the circumference of your finger. From the circumference you can easily deduce the size of the ring from the table below.

Determine the size by the ring that fits you, measure its inner diameter and use the table below. You can also easily derive the size from the inner diameter.

Size
circumference (mm)

Daimeter
(mm)

USA

Japan

UK

Germany

Switzerland

48

15.27

4 1/2

8

I - 1/2

15 1/4

--

49

15.70

5

9

J 1/2

15 3/4

--

51

16.10

5 1/2

11

L

16

11 3/4

52

16.51

6

12

M

16 1/2

12 3/4

53

16.92

6 1/2

13

N

17

14

55

17.35

7

14

O

17 1/4

15 1/4

56

17.75

7 1/2

15

P

17 3/4

16 1/2

57

18.19

8

16

Q

18

17 3/4

58

18.53

8 1/2

17

Q 1/2

18 1/2

--

59

18.89

9

18

R 1/2

19

--

61

19.41

9 1/2

19

S 1/2

19 1/2

--

62

19.84

10

20

T 1/2

20

--

63

20.20

10 1/2

22

U 1/2

20 1/4

--

65

20.68

11

23

V 1/2

20 3/4

--

66

21.08

11 1/2

24

W 1/2

21

--

68

21.49

12

25

Y

21 1/4

27 1/2

69

21.89

12 1/2

26

Z

21 3/4

28 3/4

70

22.33

13

27

--

22

--

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