Atmosphere (standard)
Bar
Inch of water (15.56 °C)
Foot of water (15.56 °C)
Meter of water (15.56 °C)
Inch of mercury (15.56 °C)
Millimeter of mercury (15.56 °C)

Pascal (Pa or N/m²)
Kilopascal (KPa)
Megapascal (MPa or N/mm2)
Gigapascal (GPa)
Kg/mm²
Kg/cm²
Kg/m²
Psf (lbs/ft²)
Psi (lbs/in²)

Ton (long)/foot² (lt/ft²)
Ton (short)/foot² (st/ft²)
Ton (metric)/meter² (t/m²)