Size Guide

Cheap Tiffany & Co. uses standard FR ring sizes. These suggested UK sizes are simply a reference. Please note that rings of the same size may have a slightly different fit depending on their design.

RING SIZE CONVERSION

US UK FR HK Inner Circumference (mm) Inner Diameter (mm)
4 H ½ 47 7 47 14.97
4.5 I ½ 48 8 48 15.29
4.77 49 9 49 15.61
5.25 50 10 50 15.92
5.6 51 11 51 16.24
6 L ½ 52 12 52 16.56
6.35 53 13 53 16.88
6.75 54 14 54 17.2
7.2 O ½ 55 15 55 17.52
7.5 P 56 16 56 17.83
7.9 57 17 57 18.15
8.25 58 18 58 18.47
8.7 59 19 59 18.79
9.05 S 60 20 60 19.11
9.5 T 61 21 61 19.43
9.85 62 22 62 19.75
10.25 U ½ 63 23 63 20.06
10.3 64 24 64 20.38
11 W 65 25 65 20.7