Measure an existing ring

  1. Select an existing ring that fits the desired finger.
  2. Measure the internal diameter of the ring in mm.
  3. Use the below chart to determine your ring size.

Internal diameter (mm)

14.1

14.9

15.7

16.5

17.3

18.1

19.0

19.8

20.6

21.4

22.2

Ring size

3

4

5

6

7

8

9

10

11

12

13

Measure your finger

  1. Wrap a strip of paper around your finger where you’d like your ring to be and pull it snug.
  2. Mark the spot where the paper meets and measure the distance with a ruler (mm).
  3. Use the below chart to determine your ring size.

Internal diameter (mm)

44.2

46.8

49.3

51.9

54.4

57.0

59.5

62.1

64.6

67.2

67.7

Ring size

3

4

5

6

7

8

9

10

11

12

13