UK	EUROPEAN	INNER CIRCUMFERENCE IN MM	USA
H	7	47	4.0
I	8	48	4.5
J	9	49	5.0
K	10	50	5.5
L	11	51	6.0
M	12	52	6.5
N	14	54	7.0
O	15	55	7.5
P	16	56	8.0
Q	17	57	8.5
R	19	59	9.0
S	20	60	9.5
T	21	61	10.0
U	23	63	10.5
V	24	64	11.0
W	25	65	11.5
X	26	66	12.0
Y	28	68	12.5
Z	29	69	13.0

 

 

 Follow the directions below to measure your finger.
Take a piece of string or strip of paper between 1.0-1.4 cm (1/2 inches).
Wrap it around the base of the appropriate finger you want to measure. 
Mark the paper/string where it overlaps, forming a complete circle. 
Take a ruler and measure the length from the starting end of the string/paper to the pen mark.
Use this measurement with the chart above to determine your ring size.
For the most accurate reading, measure the finger at the end of the day.