Rings Size Guide Rings Bracelets Necklaces & Pendants Rings Bracelets Necklaces & Pendants US Size UK Size 2 D 2.5 E 3 F 3.5 G 1/2 4 H 1/2 4.5 I 1/2 5 J 5.5 K 1/2 6 L 1/2 6.5 M 1/2 7 N 1/2 7.5 P 8 Q 8.5 R 9 S 9.5 T 10 U 10.5 V 11 W 11.5 W 3/4 12 Y 12.5 Z 13 Z+1 Find your fit Tiffany & Co. uses standard US rings sizes. Refer to our measurement chart or the ruler found in our size guide. View & download complete guide