Pro Tip : If you don’ t know your ring size,
Use a piece of string, wrap around your finger, and mark it.
Measure the marked string in millimeters.
Use the chart below to match your measurement to the universal size guide below.(If it's not exact, find the measurement that is closest)
Millimeters US British French German Swiss Japanese 46.0 4 H 47 15.0 7 7 47.6 4.5 I 48 15.5 9 8 49.2 5 J 50 15.8 10 9 50.8 5.5 K 52 16.0 12 10 52.4 6 L 53 16.5 13 12 53.2 6.5 M 54 17.0 14 13 54.0 7 N 55 17.3 15 14 55.6 7.5 O 56 17.8 16.5 15 57.2 8 P 57 18.0 18 16 57.82 8.5 Q 58 18.5 19 17 58.7 9 R 59 19.0 20 18 60.3 9.5 S 60 19.5 21.5 19 61.9 10 T 61 20.3 22 20 63.5 10.5 U 62 20.8 23.5 22 65.1 11 W 63 21.0 25 23 65.9 11.5 X 64 21.3 26 24 66.7 12 Y 66 21.8 27.5 25