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Ideal Gas Law PV = nRT Calculator

PV = nRT — solve for any gas variable.

Solves the ideal gas law PV = nRT for pressure, volume, moles, or temperature given the other three variables.

Dr. Helena Ortiz By Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

P = nRT/V; R = 8.314 J/(mol·K) = 0.08206 L·atm/(mol·K)

In depth

Solves the ideal gas law PV = nRT for pressure, volume, moles, or temperature given the other three variables.