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.

Calculators that use Vm

Ideal Gas Law

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