Letter Numerals

letter	number
a	1
b	2
c	3
d	4
e	5
f	6
g	7
h	8
i	9
j	10
k	20
l	30
m	40
n	50
o	60
p	70
q	80
r	90
s	100
t	200
u	300
v	400
w	500
x	600
y	700
z	800
&	900

References

gematria isopsephy