Volume of 1 Mole of Ideal Gas at STP
At standard temperature (273.15 K) and pressure (101325 Pa), 1 mole of ideal gas occupies approximately 22.4 litres (0.0224 m³).
How to use this tool
- Enter pressure (p), volume (v), amount (n) and temperature (t) in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your pressure and the full breakdown beneath it.
Use the ideal gas law to confirm that 1 mole of gas occupies 22.4 L at STP.
Frequently asked questions
- What is standard temperature and pressure (STP)?
- STP is 273.15 K (0 °C) and 101,325 Pa (1 atm). One mole of ideal gas occupies 22.414 litres at STP.
- When does the ideal gas law break down?
- At very high pressures or very low temperatures, intermolecular forces matter and you need the van der Waals equation or other corrections.