Molar volume of an ideal gas (273.15 K, 101.325 kPa) = 22.413 969 54... × 10⁻³ m³·mol⁻¹

Name: Molar volume of an ideal gas (273.15 K, 101.325 kPa) (Vm) — CODATA 2022 value
Creator: NIST

Symbol: Vm
Value: 22.413 969 54... × 10⁻³
Unit: m³·mol⁻¹
Uncertainty: exact (by definition)
Copy-ready: 22.41396954e-3

22.414 litres per mole at 0 °C and one atmosphere. Note the conditions: at 25 °C and 1 bar the figure is different.

NIST, Fundamental Physical Constants — Complete Listing (2022 CODATA adjustment), retrieved 2026-07-26.

Thermodynamic and chemical constants

Molar gas constant Faraday constant Stefan–Boltzmann constant Wien wavelength displacement law constant Molar volume of an ideal gas (273.15 K, 101.325 kPa)

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Thermodynamic and chemical constants

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All physical constants