Industrial Filtration, Separation & Dust Collection calculator

Air-To-Cloth Ratio Calculator

Use this calculator to estimate air-to-cloth ratio for dust collectors and baghouses. It helps engineers connect collector airflow, installed media area, media service margin, dust loading, and cleaning limits before selecting bags or cartridges.

What this calculator does

  • Estimate air-to-cloth ratio from collector airflow, inverse media area basis, unit conversion, and media service multiplier.
  • Use it when checking baghouse or cartridge collector airflow against available filter media area.
  • The result estimates airflow per square foot of installed filter media.

Formula used

  • Air-to-cloth ratio = collector airflow × inverse installed media area × unit conversion multiplier × media service multiplier
  • Check the result against media supplier limits, dust loading, and cleaning method.

Inputs explained

  • Collector airflow: Use actual or design airflow entering the dust collector at the operating point.
  • Inverse installed media area: Enter one divided by installed media area so the product gives CFM per square foot.
  • Unit conversion multiplier: Use 1 when airflow is in CFM and media area is in square feet, or use your internal conversion basis.
  • Media service multiplier: Adjust for dust loading, cleaning limits, moisture, sticky dust, pulsing constraints, or conservative sizing.

How to use the result

  • Use it to screen collector sizing, media loading, pressure drop risk, and cleaning frequency.
  • It depends on dust type, media selection, cleaning system, humidity, inlet loading, and allowable pressure drop.

Common questions

  • What is the air-to-cloth ratio calculator for? It estimates airflow per square foot of filter media for a dust collector or baghouse.
  • What information should I enter? Use collector airflow, inverse installed media area, unit conversion, and media service multiplier.
  • What does the result tell me? The result helps judge whether the media area is reasonable for the dust loading and cleaning method.
  • When is the result only an estimate? It is only an estimate when airflow, media area, dust loading, or cleaning performance changes.

Last reviewed 2026-05-12.