Formula verified · Deterministic calculation

Gas Density Calculator

Calculate ideal-gas density from pressure, molar mass and absolute temperature using deterministic SI-compatible constants.

Pressure (atm)Molar mass (g/mol)Temperature (K)

Density1.25 g/L

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Result methodology

Deterministic calculation using the displayed certified chemistry formula. Gas Density = 1.249220935353164

How this calculator works

ρ = PM/(RT).

Formula

ρ=PM/RT

Ideal-gas density in g/L from pressure, molar mass and absolute temperature.

Worked example

Verified example is a verified test case used by the calculation engine.

Assumptions and limitations

Temperature must be positive kelvin.
Pressure and molar mass are non-negative.
The gas is modeled as ideal.

Methodology & sources

This calculator uses deterministic, versioned calculation logic. The formula and verified examples above are part of the calculation definition used by CalcuMint.

CalcuMint deterministic chemistry engine

Frequently asked questions

What is the result unit?

With the displayed inputs and gas constant, density is in g/L.

Is this for real gases?

It is an ideal-gas approximation.