SI Unit (Metric) Prefixes
Greek prefixes indicate a unit greater than the base unit; Latin prefixes indicate a unit smaller than the base unit. Those above the dashed line in the table below are Greek prefixes and those below the dashed line are Latin prefixes.
|
Prefix |
Symbol |
Numeric Multiplier |
Sci. Not Form |
|
tera |
T |
1 000 000 000 000 |
1 x 10 12 |
|
giga |
G |
1 000 000 000 |
1 x 10 9 |
|
mega |
M |
1 000 000 |
1 x 10 6 |
|
kilo |
k |
1 000 |
1 x 10 3 |
|
hecto |
h |
100 |
1 x 10 2 |
|
deka |
da |
10 |
1 x 10 1 |
|
****** |
****** |
1 |
1 x 10 0 |
|
deci |
d |
0.1 |
1 x 10 -1 |
|
centi |
c |
0.01 |
1 x 10 -2 |
|
milli |
m |
0.001 |
1 x 10 -3 |
|
micro |
µ |
0.000 001 |
1 x 10 -6 |
|
nano |
n |
0.000 000 001 |
1 x 10 -9 |
|
pico |
p |
0.000 000 000 001 |
1 x 10 -12 |