|
SI Base Units
|
||
|
Quantity
|
Unit
|
Symbol
|
|
Length
|
meter
|
m
|
|
Mass
|
kilogram
|
kg
|
|
Time
|
second
|
s
|
|
Temperature
|
kelvin
|
K
|
|
Amount of Substance
|
mole
|
mol
|
|
Electric current
|
ampere
|
A
|
|
Luminous intensity
|
candela
|
cd
|
|
SI Derived Units
|
||
|
Quantity
|
Unit
|
Symbol
|
|
Area
|
Length squared
|
m2
|
|
Volume
|
Length cubed
|
m3
|
|
Density
|
Mass per cubic volume
|
kg/m3
|
|
Speed
|
Distance traveled per unit time
|
m/s
|
|
Acceleration
|
Speed changed per unit time
|
m/s2
|
|
Force
|
Mass time acceleration of object
|
kg . m/s2
|
|
Pressure
|
Force per unit area
|
kg/(m.s2)
|
|
Energy
|
Force times distance traveled
|
kg.m2/s2
|
|
SI Prefixes
|
||
|
Multiple
|
Prefix
|
Symbol
|
|
1018
|
exa
|
E
|
|
1015
|
peta
|
P
|
|
1012
|
tera
|
T
|
|
109
|
giga
|
G
|
|
106
|
mega
|
M
|
|
103
|
kilo
|
k
|
|
102
|
hecto
|
h
|
|
10
|
deka
|
da
|
|
10-1
|
deci
|
d
|
|
10-2
|
centi
|
c
|
|
10-3
|
milli
|
m
|
|
10-6
|
micro
|
µ
|
|
10-9
|
nano
|
n
|
|
10-12
|
pico
|
p
|
|
10-15
|
femto
|
f
|
|
10-18
|
atto
|
a
|