Square on Square Geometric Ring

Square on Square Geometric Ring

Ring Size
Diameter (MM) Distance across
Circumference (MM) Distance around
H I J 1/2 K 1/2 L 1/2 M 1/2 N 1/2 O 1/2 P 1/2 Q 1/2 R 1/2 S 1/2 T 1/2 U 1/2 V 1/2 W 1/2 X 1/2 Z Z1 Z2 Z3 Z4 Z5
14.9 15.3 15.7 16.1 16.5 16.9 17.3 17.7 18.1 18.5 19.0 19.4 19.8 20.2 20.6 21.0 21.4 21.8 22.2 22.6 23.0 23.4 23.8
46.8 48.0 49.3 50.6 51.9 53.1 54.4 55.7 57.0 58.3 59.5 60.8 62.1 63.4 64.6 65.9 67.2 68.5 69.7 71.0 72.3 73.6 74.8

The average ring size for women is size N ½; the average ring size for men is size T ½.
A ring should fit secure enough so that it will never fall off. It should have a loose comfortable fit when sliding it over your knuckle.