Do you already own a ring of the same size you would like to purchase?

If yes, simply take a ruler or tape measure and measure straight across the inside of the ring from inside edge to edge. Take the diameter measurement in inches or mm, and then use the measurement-conversion chart to find your ring size.

If you do not already have a ring in your size, please scroll down to the 2nd table.

INSIDE DIAMETER

RING SIZE

inches

mm

UK

US

EU

0.6

15.49

J

5

48.5

0.62

15.9

K

5.5

50

0.64

16.31

L

6

51

0.65

16.71

M

6.5

52

0.69

17.53

O

7

55

0.7

17.93

P

7.5

56

0.72

18.34

Q

8

57

0.73

18.75

R

8.5

58.5

0.75

19.15

S

9

59.5

0.77

19.56

T

9.5

61

0.78

19.81

U

10

62.5

 

How to determine your size if you don't have a ring of the same size:

  1. Take a piece of string or a piece of paper (no wider than 1.4cm or ½ inch), as this will help you to be accurate.
  2. Wrap it around the base of the finger you would like to measure.
  3. Use a pen to mark the point on the string or paper where it overlaps. The overlap will form a complete circle.
  4. Take a ruler or measuring tape and measure the length of the string or paper from the starting end, to the end you marked with the pen.
  5. Finally, use this measurement and compare it against the chart below to determine your ring size.

INSIDE CIRCUMFERENCE

RING SIZE

inches

mm

UK

US

EU

1.9

48.38

J

5

48.5

1.95

49.64

K

5.5

50

1.99

50.58

L

6

51

2.04

51.87

M

6.5

52

2.15

54.51

O

7

55

2.2

55.76

P

7.5

56

2.25

57.15

Q

8

57

2.3

58.47

R

8.5

58.5

2.36

60

S

9

59.5

2.41

61.29

T

9.5

61

2.48

62.89

U

10

62.5

 

Important tips for measuring your ring size:

  • Avoid measuring for a ring when you’re cold, as your fingers will be half a size smaller.
  • Make sure you can comfortably slide the string or paper over your finger joints/knuckles.
  • Measure your finger 3 or 4 times to make sure you’re getting a correct reading.
  • Use a few different pieces of paper or string too - these materials can twist or stretch so it’s best to take a few readings.
  • Rings with wider bands will fit a bit tighter, so you may need to go up a size.