basic

Dalton's Partial Pressure Calculator

Partial pressure from mole fraction.

Compute the partial pressure of one component in an ideal gas mixture using Dalton's law: P_i = X_i · P_total, given the mole fraction (or moles of i and total moles) and the total pressure.

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

Inputs

mol
mol
atm

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

Compute the partial pressure of one component in an ideal gas mixture using Dalton's law: P_i = X_i · P_total, given the mole fraction (or moles of i and total moles) and the total pressure.