Units

Temperature

K

°C

°F

Pressure

Pa

bar

psi

Enthalpy

J/kg

kJ/kg

Btu/lb

Entropy

J/kg-K

kJ/kg-°C

Btu/lb-°F

Internal Energy

J/kg

kJ/kg

Btu/lb

Helmholtz Energy

J/kg

kJ/kg

Btu/lb

Gibbs Energy

J/kg

kJ/kg

Btu/lb

Density

kg/m³

kg/m³

lb/ft³

Volume

m³/kg

m³/kg

ft³/lb

Isobaric Heat Capacity, C_p

J/kg-K

kJ/kg-°C

Btu/lb-°F

Isochoric Heat Capacity, C_v

J/kg-K

kJ/kg-°C

Btu/lb-°F

Isothermal Compressibility, Kappa (κ)

1/Pa

1/bar

1/psi

Thermal Expansion Coefficient, Alpha (α)

1/K

1/°C

1/°F

Speed of Sound

m/s

m/s

ft/s

Compressibility Factor

-

-

-

Vapor Quality

-

-

-

Dynamic Viscosity

Pa s

cP

lb/ft-h

Kinematic Viscosity

m²/s

mm²/s

ft²/s

Thermal Conductivity

W/m-K

W/m-°C

Btu/h-ft-°F

Prandtl Number

-

-

-

Molar Mass

kg/mol

kg/kmol

lb/lbmol

Phase

-

-

-