Standard Temperature and Pressure (STP)

Chemists define the standard temperature and pressure of gases, abbreviated STP, as 0 ºC and 1 atm pressure. Recall that 0 ºC is equal to 273.15 Kelvin.

Standard Pressure = 1 atm = 760 mm Hg = 101.3 kPa

Click here to learn how to convert among pressure units.

Click here to learn how to convert between degrees Celsius and Kelvin.