Ring Size Guide

To find your ring size you can either:

  • Measure an existing ring – pick a ring that fits, measure its inside diameter in mm, then match it to the chart.
  • Measure your finger – wrap a strip of paper around the finger, mark where the ends meet, measure that length in mm, then use the chart.

Useful Tips:

  1. If you’re between two sizes, choose the larger one so the ring feels comfortable.
  2. Cold weather can make your fingers about half a size smaller, while heat can make them swell.
  3. For the most reliable measurement, check your ring size later in the day.
  4.  Wide bands fit more snugly than narrow ones, so consider going up a size.

Need help? Contact Us on WhatsApp or email - hello@luluoro.com


 

Ring Size Conversion Table

Diameter (mm)

Circumference (mm)

International*

Italian

US

UK

14.5

45.0

45

6

3.75

G

14.8

46.5

46.5

7

4.25

H

15.2

47.8

47.5

8

4.5

I

15.6

49.0

48.5

9

5

J

16.0

50.3

50

10

5.5

K

16.4

51.5

51

11

6

L

16.8

52.8

52.5

12

6.5

M

17.2

54.0

53.5

13

6.75

N

17.4

54.7

55

14

7

O

18.0

56.6

56

15

7.5

P

18.4

57.8

57.5

16

8

Q

19.0

59.1

59

17

8.5

R

19.2

60.3

60.25

18

9

S

19.5

61.29

62.75

19

9.5

T

20.0

62.8

63

20

10

U

20.3

63.8

64

21

10.5

V

 

*The “International” column reflects the inside-circumference-in-millimeters convention used in many countries and often mirrors the finger-circumference figure.