Prefixes used in SI units
giga-
G
1,000,000,000
10
9
mega -
M
1,000,000
10
6
kilo -
k
1,000
10
3
deci-
d
0.1
10
-1
centi-
c
0.01
10
-2
milli-
m
0.001
10
-3
micro-
m
0.000001
10
-6
nano-
n
0.000000001
10
-9