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CHEMISTRY / GASES

Ideal Gas Density Calculator

Calculate ideal gas density from pressure, molar mass, and temperature. Review the equation, substituted values, result, assumptions, and interpretation in one guided workspace.

  • 01 Calculated in this tab
  • 02 Values stay in this browser tab
  • 03 Use boundary

Conversion input

Known value

Filter by unit name, symbol, or code. Your current selections remain available.

Equation inputs

Preparing the calculator...

Use boundary

Calculation path

Calculate ideal gas density from pressure, molar mass, and temperature. The page evaluates the displayed equation from your supplied values and presents both symbolic and substituted KaTeX working so the arithmetic can be checked.

Calculation path

rho=PM/(RT)

What you provide

What you provide

  • Gas pressure expressed in atm, using the same scenario as the other inputs
  • Gas molar mass expressed in g/mol, using the same scenario as the other inputs
  • Absolute temperature expressed in K, using the same scenario as the other inputs

What you receive

What you receive

  • Gas density in g/L from the stated equation
  • A symbolic formula plus substituted working with your values
  • Visible assumptions, field guidance, and an authoritative learning reference

Use boundary

Choose the maximum decimal places shown. This does not increase source accuracy.

This calculation is not a laboratory procedure; verify purity, units, hazards, activities, and conditions.

Use internally consistent units and retain extra precision when carrying the result into another calculation.

Reviewed reference factors

Reviewed reference factors

OpenStax Chemistry 2e

Continue converting

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