How to Convert Ring Size from mm to US? [Ultimate Guide]

Converting mm to us ring size is possible by conversion chart.

Table of Contents

It is possible to measure your ring size in mm through domestic ways, and you may now want to convert it to the standard ring size of the US. If you are interested in getting acquainted with mm to us ring size and owning a conversion chart, join us in the following essay.

Ring Size in US

Ring size is not measured by one unit in all countries. In the United States, ring size is not measured in centimeters, millimeters, or inches, and there is a specific unit of measurement for ring size in the United States. In the United States, ring sizes start at 0.5 and go up to 13. Size 0.5 is suitable for infants and toddlers. American women’s ring sizes are usually between 8 and 6, with ring size 7 being the most commonly used.

Also, in the United States, most men use sizes 9 through 11, of which 10 is the most common ring size for men.

How Do I Know My Ring Size US?

In order to be able to obtain your US ring size, undoubtedly, there is no need to go to a jeweler, but there are some domestic ways that you can simply measure your ring size based on US unit through these methods. Some of the most common ways of measuring US ring size at home are:

You can go to jeweler, if you want to know you ring size in US
  • Use String or Floss 
  • Buy a Ring Sizer 
  • Use Print Ring Ruler 
  • Use Printed Ring Size Chart

If you would like to learn about the instruction of ring size measurement through the aforesaid ways, you can refer to an essay called ring size available on the website.

Ring Size in mm

Ring size measurement based on mm is far easier than other units of measurement. In order to measure ring size in mm, you should measure the internal circumference of the ring as well as the diameter of the ring. In the following, we will talk about the way of ring size measurement based on mm.

Ring size measurement based on mm is much easier than other units

How Do I Measure My Ring Size in mm?

In order to be able to measure these two units, the simplest way is to use meters that are used in tailoring, and these meters are in the form of fabric and flexible. Furthermore, you can use ring sizers that show the size based on mm, and finally, you can use string or floss for measuring the mm size of the ring.

mm to US Ring Size Conversion Chart 

If you want to convert your ring size from mm to us or vice versa, it is enough to refer to the table below, which is located for you. While measuring ring size in mm, you should measure the circumference of the ring as well as the diameter of the ring. During matching, if you notice that your ring is between 7 and 8 based on US unit, you’d better consider size 8 and round it up.

Ring Size

US

Diameter

mm

Circumference

mm

0.5

12.04

37.8

1

12.45

39.1

1.5

12.85

40.4

2

13.26

41.7

2.5

13.67

42.9

3

14.07

44.2

3.5

14.48

45.5

4

14.88

46.8

4.5

15.29

48

5

15.49

48.7

5.5

15.9

50

6

16.31

51.2

6.5

16.71

52.5

7

17.12

53.8

7.5

17.53

55.1

8

17.93

56.3

8.5

18.34

57.6

9

18.75

58.9

9.5

19.15

60.2

10

19.56

61.4

10.5

19.96

62.7

11

20.37

64

11.5

20.78

65.3

12

21.18

66.6

12.5

21.59

67.8

13

21.79

68.5

Final Thought

In this essay, we did our best to instruct conversion of mm to us ring size through the chart. We hope this essay has been useful and practical for you, and you can easily convert your ring size from mm to us and vice versa with the help of this essay. You can share all of your questions about this essay and ring size in the comment section so that our colleagues will respond to you as soon as possible. 

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