[Energy | Pressure | Volume | Temperature | Mass | Power]

Value	Input Unit	Output Unit
Energy	J cal BTU	J cal BTU
Pressure	Pa atm bar mm Hg psi	Pa atm bar mm Hg psi
Volume	m^3 cm^3 L ft^3	m^3 cm^3 L ft^3
Temperature	° C ° F K ° R	° C ° F K ° R
Mass	kg lb	kg lb
Power	watt hp	watt hp