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Ring Size Conversion Chart

Dafina Jewelry ring sizes are in U.S./ Canada standard. You can use the chart below to determine ring sizes in other countries.

Diameter (mm)United States and CanadaUK, Europe, AustraliaAsiaSwitzerland
14.1 3 F 4 4
14.3 3 1/4 F 1/2 5 5 1/4
14.5 3 1/2 G
14.7 3 3/4 G 1/2 6 6 1/2
14.9 4 H 7 6 3/4
15.1 4 1/4 H 1/2 7 3/4
15.3 4 1/2 I 8
15.5 4 ¾ J 9
15.7 5 J 1/2 9 9 1/2
15.9 5 ¼ K 10
16.1 5 ½ K 1/2 10
16.3 5 3/4 L 11 3/4
16.5 6 L 1/2 11 12 3/4
16.7 6 1/4 M 12
16.9 6 1/2 M 1/2 13 14
17.1 6 3/4 N
17.3 7 N 1/2 14 15 1/4
17.5 7 1/4 O
17.7 7 ½ O 1/2 15 16 1/2
17.9 7 3/4 P
18.1 8 P 1/2 16 17 3/4
18.3 8 ¼ Q
18.5 8 ½ Q 1/2 17
18.8 8 ¾ R 19
19 9 R ½ 18
19.2 9 1/4 S 20 1/4
19.4 9 1/2 S 1/2 19
19.6 9 3/4 T 21 1/2
19.8 10 T ½ 20
20 10 ¼ U 21
20.2 10 ½ U ½ 22 22 3/4
20.4 10 3/4 V
20.6 11 V 1/2 23
20.8 11 1/4 W 25
21.0 11 1/2 W 1/2 24
21.2 11 3/4 X
21.4 12 X 1/2 25 27 1/2
21.6 12 ¼ Y
21.8 12 ½ Z 26 28 3/4
22 12 3/4 Z 1/2
22.2 13 Z 3/4 27
22.4 13 1/4 Z+1