TYPICAL
APPLICATIONS
RECOMMENDED SI (METRIC) UNITS
IMPERIAL UNIT
NAME
SYMBOL
NAME
SYMBOL
POWER
kilowatt
kW
horsepower
Hp
watt
W
Btu per hour
Btu per minute
Btu/hr
Btu/min
PRESSURE or STRESS (FORCE PER AREA)
kilopascal
kPa
pound per square inch
inch of mercury
psi
inHg
pascal
Pa
inch of water
inH
2
O
megapascal
Mpa
pound per square inch
psi
TEMPERATURE (other than THERMODYNAMIC)
degrees Celsius
C
degrees Fahrenheit
F
TIME
hour
h
hour
h
minute
min
minute
min
second
s
second
s
TORQUE (includes BENDING MOMENT, MOMENT OF FORCE, and MOMENT OF A COUPLE)
newton meter
N m
N m
pound foot
pound inch
Ib ft
Ib in
VELOCITY
kilometre per hour
km/h
mile per hour
mph
meter per second
m/s
foot per second
ft/s
millimetre per second
mm/s
inch per second
in/s
meter per minute
m/min
foot per minute
ft/min
VOLUME (includes CAPACITY)
cubic meter
m
3
cubic yard
yd
3
cu yd
litre
l
cubic inch
in
3
litre
l
US gallon
UK gallon
US quart
UK quart
US gal
UK gal
US qt
UK qt
millimetre
ml
fluid ounce
fl oz
