Length
in
ft
mm
Area
in
2
ft
2
m
2
Area
in = =
Volume
in
3
ft
3
lt (dm
3
)
Mass
lb =
kg
Density
lb/ft
3
=
kg/m
3
Force
lb
kg
N
Torque
lbf·ft
kgf·m
N·m
Pressure
in H
2
O
in Hg
mm Hg
lbf/in
2
(psi)
atm
kg/cm
2
(at)
kPa
Energy
kcal
Btu
hp·h
kWh
kJ
Power
hp =
metric hp =
kW
Velocity
ft/min =
mi/h =
m/min =
km/h =
m/s
Flow Rate
ft
3
/min (cfm) =
m
3
/h =
m
3
/min =
m
3
/s
Temperature
°F
°C
Fuel Consumption
mi/gal
l/100 km
aa