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Gas Collision Frequency Calculator

Z ≈ √2·π·d²·n²·v_avg — kinetic theory collision rate.

Estimates molecular collision frequency in an ideal gas from number density, molecular diameter, temperature, and molar mass using kinetic theory.

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

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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

v_avg = √(8RT/πM); Z = √2·π·d²·n²·v_avg

In depth

Estimates molecular collision frequency in an ideal gas from number density, molecular diameter, temperature, and molar mass using kinetic theory.