Area

yd²
cm² ft²
mm² in²
Ha ac

Energy

J BTU
KJ cal
MJ kcal

Flow Rate

m³/s ft³/s
m³/m ft³/m
m³/h ft³/h
lpm US gpm
lph US gph

Length

mm in
cm ft
m yd
km mi

Mass

oz metric tonne
g long ton IMP
kg short ton US
lb

Power

kW W
MW hp imp

Pressure

PSI kPa
MPa Pa
Bar Atm
in Hg mm Hg

Temperature

Celcius Fahrenheit
Kelvin  

Torque

Nm lbf-in
kgf-m lbf-ft

Volume

ft³
cm³ L
US G Imp G