advanced standard temperature and pressure calculator

enter the value, select the unit, and click calculate. the calculation results will be displayed.

enter a value:

volume:
temperature:
pressure:

calculation result:

volume stp:

Liters
Cubic Millimeters
Cubic Centimeters
Cubic Meters
Cubic Inches
Gallons
Cubic Feet
Cubic Yards
Moles at STP:
advanced standard temperature and pressure calculator

since gases have no definite volume, scientists have agreed on standard temperatures and pressures by which gas volumes can be compared.

1) before 1982, the international union of pure and applied chemistry (iupac) defined:
standard temperature is 273.15 kelvin (0° celsius) and
standard pressure is 1 standard atmosphere (101,325 pascal, 760.00 torr).

2) since 1982, iupac now defines
standard temperature is 273.15 kelvin (0° celsius) and
standard pressure is 0.98692 standard atmospheric pressure, 100,000 pascal, 750.06 torr

3) national institute of standards and technology (nist) definition
normal temperature and pressure (ntp) is:
the temperature is 293.15 kelvin (20°c) and
pressure of 1 standard atmosphere (101,325 pascal, 760.00 torr)

4) standard ambient temperature and pressure (satp) is defined as:
the temperature is 298.15 kelvin (25 degrees celsius) and
the pressure is 0.98692 standard atmosphere, 100,000 pascal, 750.06 torr
the calculator determines stp volumes based on data that can be entered in several different units (8 volume units, 4 temperature units, 18 pressure units). it displays output in liters as well as 7 other volume units.
additionally, it displays the number of moles of gas based on 22.711 liters per mole.
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