English Letter Frequencies

E 12.6%

T 9.6%

A 8.1%

O 7.9%

N 7.2%

I 7.2%

S 6.6%

R 6.0%

H 5.1%

L 4.0%

D 3.7%

C 3.2%

U 3.1%

P 2.3%

M 2.2%

W 2.0%

Y 1.9%

B 1.6%

G 1.6%

V 0.9%

K 0.5%

Q 0.2%

X 0.2%

J 0.1%

Z 0.1%

http://www.math.cornell.edu/~mec/2003-2004/cryptography/subs/frequencies.html