Table 2-1a SI Base Units

Base Quantity Name of unit Symbol
Length Meter m
Mass Kilogram kg
Time Second s
Electrical  Current Ampere A
Temperature Kelvin K
Amount of Substance Mole mol
Luminous Intensity Candela cd

Table 2-1b SI Derived Units

Base Quantity Common Units
Volume dm3
Density kg/dm3
Acceleration m/s2
Force kg x m/s2

Table 2-1c SI Prefixes

Prefix Symbol Multiply the base by
exa- E 1 000 000 000 000 000 000
peta- P 1 000 000 000 000 000
tera- T 1 000 000 000 000
giga G 1 000 000 000
mega M 1 000 000
kilo k 1000
hecto- h 100
deca- da 10
deci- d 0.1
centi c 0.01
milli- m 0.001
micro- u 0.000 001
nano- n 0.000 000 001
pico- p 0.000 000 000 001
femto- f 0.000 000 000 000 001
atto- a 0.000 000 000 000 000 001