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RING SIZER

 

If you discover that your ring size is not one of the standard sizes we typically carry in stock, we are pleased to offer our customers a resizing service starting from £30. As not all ring styles can be adjusted, we recommend you check with us before placing an order. If we can accommodate your request, use this ring sizing guide and a measuring tape to inform us of your actual ring size. We also recommend that you order the nearest size to your own in order to minimise the cost of the alteration. If you require more information regarding resizing please email us at info@cirojewellery.com and we will try to answer your enquiry as soon as possible.
Inside diameter Inside circumference Ring Sizes
(in) (mm) (in) (mm) USA UK
0.46 11.63 1.44 36.50 0  
0.47 11.84 1.46 37.20 ¼  
0.47 12.04 1.49 37.80 ½ A
0.48 12.24 1.51 38.50 ¾ A½
0.49 12.45 1.54 39.10 1 B
0.50 12.65 1.56 39.70 1¼ B½
0.51 12.85 1.59 40.40 1½ C
0.51 13.06 1.61 41.00 1¾ C½
0.52 13.26 1.64 41.70 2 D
0.53 13.46 1.67 42.30 2¼ D½
0.54 13.67 1.69 42.90 2½ E
0.55 13.87 1.72 43.60 2¾ E½
0.55 14.07 1.74 44.20 3 F
0.56 14.27 1.77 44.80 3¼ F½
0.57 14.48 1.79 45.50 3½ G
0.58 14.68 1.82 46.10 3¾ G½
0.59 14.88 1.84 46.80 4 H
0.59 15.09 1.87 47.40 4¼ H½
0.60 15.29 1.89 48.00 4½ I
0.61 15.49 1.92 48.70 4¾ J
0.62 15.70 1.94 49.30 5 J½
0.63 15.90 1.97 50.00 5¼ K
0.63 16.10 1.99 50.60 5½ K½
0.64 16.31 2.02 51.20 5¾ L
0.65 16.51 2.04 51.90 6 L½
0.66 16.71 2.07 52.50 6¼ M
0.67 16.92 2.09 53.10 6½ M½
0.67 17.12 2.12 53.80 6¾ N
0.68 17.32 2.14 54.40 7 N½
0.69 17.53 2.17 55.10 7¼ O
0.70 17.73 2.19 55.70 7½ O½
0.71 17.93 2.22 56.30 7¾ P
0.71 18.14 2.24 57.00 8 P½
0.72 18.34 2.27 57.60 8¼ Q
0.73 18.54 2.29 58.30 8½ Q½
0.74 18.75 2.32 58.90 8¾ R
0.75 18.95 2.34 59.50 9 R½
0.75 19.15 2.37 60.20 9¼ S
0.76 19.35 2.39 60.80 9½ S½
0.77 19.56 2.42 61.40 9¾ T
0.78 19.76 2.44 62.10 10 T½
0.79 19.96 2.47 62.70 10¼ U
0.79 20.17 2.49 63.40 10½ U½
0.80 20.37 2.52 64.00 10¾ V
0.81 20.57 2.54 64.60 11 V½
0.82 20.78 2.57 65.30 11¼ W
0.83 20.98 2.59 65.90 11½ W½
0.83 21.18 2.62 66.60 11¾ X
0.84 21.39 2.65 67.20 12 X½
0.85 21.59 2.67 67.80 12¼ Y
0.86 21.79 2.70 68.50 12½ Z
0.87 22.00 2.72 69.10 12¾ Z½
0.87 22.20 2.75 69.70 13  
0.88 22.40 2.77 70.40 13¼ Z1