Ring chart

English American
J 4 3/4
K 5 1/4
L 5 3/4
M 6 1/4
N 6 3/4
O 7
P 7 1/2
Q 8
R 8 1/2
S 9
T 9 1/2
U 10
V 10 1/2
W 11
X 11 1/2
Y  12
Z 12 1/2