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Easily find your ring size in different countries using our Ring Size Conversion Chart.

01 Mar 2025

The ring which should be opted for engagement ringedding band should fit comfortably. It shouldn’t be not too tight, not too loose. But with different ring size systems across the world, finding the right fit can be confusing. 

Use our Ring Size Conversion Chart to ensure a comfortable fit. If you need expert guidance, explore our Ring Size Guide or reach out to our team at Ring Premier.

How to Measure Your Ring Size at Home

If you don’t have a ring sizer, you can measure your size using simple tools at home. Here’s how:

  1. Use a string or paper strip: Wrap a thin piece of string or a strip of paper around the base of your finger.

  2. Mark and measure: Mark where the ends meet and measure the length in millimeters.

  3. Find your size: Use the ring diameter measurement to match your size in our conversion chart below.

For more precise results, use our ring size guide.

Ring Size Conversion Chart

Below is a comprehensive ring size conversion chart to help you find your size across different international standards:

Ring Diameter (MM)

USA/Canada

United Kingdom

France

Germany

Japan

Switzerland

14.0 mm.

3

F

44

14

4

4

14.4 mm.

G

45¼

14½

6⅓

14.8 mm.

4

46½

15

7

15.2 mm.

47¾

15¼

8

8

15.6 mm.

5

49

15¾

9

16.0 mm.

L

50¾

16

10½

10¾

16.5 mm.

6

M

51½

16½

12

12¾

16.9 mm.

N

52¾

17

13

14

17.3 mm.

7

O

54

17¼

14

15¼

17.7 mm.

P

55¼

17¾

15

16½

18.2 mm.

8

Q

56¾

18

16

17¾

18.6 mm.

58

18½

17

18½

19.0 mm.

9

59¼

19

18

20

19.4 mm.

60¾

19½

19

21

19.8 mm.

10

61¾

20

20

21¾

20.2 mm.

10½

62¾

20¼

22

22¾

20.6 mm.

11

64¼

20¾

23

24

21.0 mm.

11½

66

21

24

25¾

21.4 mm.

12

Y

67¼

21¼

25

27½

21.8 mm.

12½

Z

68

21¾

26

28¾

22.2 mm.

13

Z + 1

69

22

27

29¼

22.6 mm.

13½

Z + 1.5

71

22.6

-

31


FAQs


1. How do I use the chart to determine my ring size?

Measure your ring’s inner diameter in millimeters and match it to the corresponding size in your country’s column.

2. Is there a difference between men's and women's ring sizes?

No, ring sizes are the same for both men and women. However, wider bands may feel tighter, so consider going up half a size for comfort.

3. What if my size falls between two measurements?

If you're between sizes, it's best to choose the larger size for a more comfortable fit.

4. Does ring size change over time?

Yes, fingers can swell or shrink due to temperature, weight changes, or pregnancy. It’s best to measure your size when your hands are at a normal temperature.

5. How accurate is the chart?

Our ring size conversion chart is highly accurate, but it’s always best to confirm with a professional jeweler for a perfect fit.

6. Do different countries have different ring size standards?

Yes, ring sizing varies by country. Our conversion chart ensures you get the right size whether you’re shopping in the US, UK, Europe, or Asia.

7. Can I determine my ring size based on a ring I already own?

Yes! Simply measure the inside diameter of your existing ring and compare it with the chart.

8. What should I do if I order a ring online that doesn’t fit?

Most jewelers, including Ring Premier, offer resizing services. Check our return and exchange policy for details.

 

FREQUENTLY ASKED QUESTIONS

Measure your ring’s inner diameter in millimeters and match it to the corresponding size in your country’s column in the conversion chart.
No, ring sizes are the same for both men and women. However, wider bands may feel tighter, so consider going up half a size for comfort.
If you're between sizes, it's best to choose the larger size for a more comfortable fit.
Yes, fingers can swell or shrink due to temperature, weight changes, or pregnancy. It’s best to measure your size when your hands are at a normal temperature.
Our ring size conversion chart is highly accurate, but it’s always best to confirm with a professional jeweler for a perfect fit.
Yes, ring sizing varies by country. Our conversion chart ensures you get the right size whether you’re shopping in the US, UK, Europe, or Asia.
Yes! Simply measure the inside diameter of your existing ring and compare it with the chart.
Most jewelers, including Ring Premier, offer resizing services. Check our return and exchange policy for details.
You can use a thin string or paper strip, wrap it around the base of your finger, mark where it overlaps, measure the length in millimeters, and compare it to our size chart.
Yes, it's best to measure your finger size in the evening when your hands are at a normal temperature. Fingers tend to swell throughout the day.
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