Volume of 1 Mol of Gas at STP (273.15 K, 101325 Pa)
One mole of an ideal gas at STP (273.15 K, 101325 Pa) occupies approximately 22.4 liters (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.
Calculate the molar volume of an ideal gas at standard temperature and pressure using PV = nRT.
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.