Sizing

Unsure about your ring size? First, select a ring that fits on the desired finger. Next, measure the diameter opening of that ring. Use the size chart to determine your ring size by country.

EU  US / CA  UK / AUS  CH   JP

EUROPE

INTERNAL DIAMETER (MM)

15.3

SIZE 48

16.6

SIZE 52

17.8

SIZE 56

18.5

SIZE 58

19.7

SIZE 62

UNITED KINGDOM / AUSTRALIA

INTERNAL DIAMETER (MM)

15.3

SIZE 1 ½

16.6

SIZE M

17.8

SIZE P

18.5

SIZE Q ½

19.7

SIZE T ½

SWITZERLAND

INTERNAL DIAMETER (MM)

15.3

SIZE 9

16.6

SIZE 12 ¾

17.8

SIZE 16 ½

18.5

SIZE 18

19.7

SIZE 22

JAPAN

INTERNAL DIAMETER (MM)

15.3

SIZE 8

16.6

SIZE 12

17.8

SIZE 15

18.5

SIZE 17

19.7

SIZE 20