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CHEMISTRY / GASES

Dalton's Partial Pressure Calculator

Sum three ideal-gas partial pressures to obtain mixture total pressure. Inspect the chemical relationship, substituted values, result, assumptions, and unit convention 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.

Preparing the calculator...

Use boundary

Calculation path

Sum three ideal-gas partial pressures to obtain mixture total pressure. 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

P_total = P_1+P_2+P_3

What you provide

What you provide

  • First partial pressure expressed in atm, using the same scenario as the other inputs
  • Second partial pressure expressed in atm, using the same scenario as the other inputs
  • Third partial pressure expressed in atm, using the same scenario as the other inputs

What you receive

What you receive

  • Total pressure in atm 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.

Components form an ideal gas mixture at one shared temperature and volume.

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

Reviewed reference factors

Reviewed reference factors