basic

Dalton's Law Partial Pressure Calculator

P_i = x_i · P_total — partial pressure from mole fraction.

Calculates partial pressures for up to four gas components in a mixture using Dalton's Law and mole fractions.

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_i = (n_i / n_total) × P_total

In depth

Calculates partial pressures for up to four gas components in a mixture using Dalton's Law and mole fractions.