Standard Temperature and Pressure: 0 C (273.15 K) and 1 atm (101.325 kPa).

Does 22.414 L apply to all gases?

To ideal gases. Real gases deviate slightly, especially at high pressures or low temperatures.

SATP is 25 C and 1 bar, where the molar volume is 24.79 L/mol.

Free Gas Volume at STP Calculator

Calculate the volume of a gas at standard temperature and pressure (0 C, 1 atm) from the number of moles.

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Moles of Gas

mol

Volume at STP

22.414 L

Volume at STP vs Moles of Gas

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Gas Volume at STP

Formula

V = n × 22.414 L/mol

At STP (0 C, 1 atm), one mole of any ideal gas occupies 22.414 liters.

Example Calculation

Volume of 1 mole of O2 at STP.

01V = n × 22.414
02V = 1 × 22.414
03V = 22.414 L

Frequently Asked Questions

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