Gas Volume At STP Calculator

Work out gas volume at stp instantly with clear inputs, formula shown and shareable results.

About Gas Volume At STP Calculator

At a fixed temperature and pressure a mole of any ideal gas occupies the same volume, so the calculation is one multiplication. The figure depends on which standard you mean: modern STP (0 C, 1 bar) gives 22.711 L/mol, the older 1 atm definition gives 22.414 L/mol, and ambient SATP gives 24.789 L/mol.

Formulas

Volume from moles

V = moles x molar volume

Molar volume

Vm = RT / P

Worked example

With the default values below, Gas Volume At STP Calculator returns Gas Volume of 45.422. Change any input above and every figure here is recalculated in your browser.

Inputs used

Amount of gasminimum 0 mol: 2 mol
Reference conditionsone of STP - 0 C and 1 bar (22.711 L/mol), Old STP - 0 C and 1 atm (22.414 L/mol), SATP - 25 C and 1 bar (24.789 L/mol): STP - 0 C and 1 bar (22.711 L/mol)

Results

Gas Volume: 45.422 L
Same Volume In Cubic Metres: 0.04542
Molar Volume Applied: 22.711 L/mol
Same Volume In Cubic Feet: 1.6041

Step by step

1Values used
2Volume from moles
3Molar volume
4Gas Volume= 45.422 L
5Same Volume In Cubic Metres= 0.04542
6Molar Volume Applied= 22.711 L/mol
7Same Volume In Cubic Feet= 1.6041

Assumptions and limits

The result is derived only from the 2 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 5 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

Which standard should I use?

IUPAC has used 0 C and 1 bar since 1982, giving 22.711 L/mol. Many textbooks still print 22.4 L/mol, which is the 1 atm version.

Does the gas identity matter?

Not for an ideal gas - that is Avogadro's insight. Real gases differ by a fraction of a percent at these conditions.