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Ring size conversion chart

 

Ring Size Conversion Chart

Inside Diameter Inside Circumference Turkish
Japanese
Swiss		 US
Canada		 British
Australian
Milimeters Inches Milimeters Inches
14.00 0.55 44 1.73 4 2¾ E½
14.32 0.56 45 1.77 5 3¼ F¾
14.64 0.58 46 1.81 6 3½ G¼
14.96 0.59 47 1.85 7 4 H½
15.28 0.60 48 1.89 8 4½ I½
15.60 0.61 49 1.93 9 4¾ J¼
15.91 0.63 50 1.97 10 5¼ K¼
16.23 0.64 51 2.01 11 5½ L
16.55 0.65 52 2.05 12 6 M
16.87 0.66 53 2.09 13 6¼ M½
17.19 0.68 54 2.13 14 6¾ N½
17.51 0.69 55 2.17 15 7 O
17.82 0.70 56 2.20 16 7½ P
18.14 0.71 57 2.24 17 8 Q
18.46 0.73 58 2.28 18 8¼ Q½
18.78 0.74 59 2.32 19 8¾ R¼
19.10 0.75 60 2.36 20 9 R¾
19.42 0.76 61 2.40 21 9½ S¾
19.73 0.78 62 2.44 22 9¾ T¼
20.05 0.79 63 2.48 23 10¼ U
20.37 0.80 64 2.52 24 10½ U½
20.69 0.81 65 2.56 25 11 V½
21.01 0.83 66 2.60 26 11½ W¾
21.33 0.84 67 2.64 27 11¾ X¼
21.64 0.85 68 2.68 28 12¼ Y½
21.96 0.86 69 2.72 29 12½ Z
22.28 0.88 70 2.76 30 13 Z1
22.60 0.89 71 2.80 31 13¼ Z1½
22.92 0.90 72 2.83 32 13¾ Z2½
23.23 0.91 73 2.87 33 14 Z3½
23.55 0.93 74 2.91 34 14½ Z4½
23.87 0.94 75 2.95 35 15 Z5