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Pump-up test

Air Compressor CFM Calculator

Estimate actual compressor free-air delivery from a receiver pump-up test using tank volume, pressure rise, and fill time.

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Pump-up test

Run the calculation

Estimate actual compressor free-air delivery from a receiver pump-up test using tank volume, pressure rise, and fill time.

Engineering inputsCompressor CFM Calculator

Enter the known application values. Outputs update instantly as units or assumptions change.

Pressure unit
Use these values for preliminary sizing before final datasheet review.

Engineering visual

Compressor CFM Calculator calculation map

The compressor converts electrical input into compressed-air output and heat. Capacity, pressure, specific power, and recoverable heat are shown by energy path.

Compressor CFM Calculator calculation mapThe compressor converts electrical input into compressed-air output and heat. Capacity, pressure, specific power, and recoverable heat are shown by energy path.MOTORCOMPRESSORη / kWAIR Q @ pRECOVERABLE HEAT
  1. 01Receiver volume
  2. 02Calculate and compare
  3. 03Free-air delivery in L/min
Estimated FAD
Estimated SCFM
Estimated m3/h
Pressure rise

Calculation reference

What this tool checks.

A pump-up estimate compares receiver volume and pressure rise over time. Isolate the receiver and follow safe site procedures before testing.

Inputs

  • Receiver volume
  • Start pressure
  • End pressure
  • Pump-up time
  • Pressure unit

Outputs

  • Free-air delivery in L/min
  • SCFM
  • m3/h
  • Pressure rise

Engineering guide

Use the result with the right context.

Calculate compressor cfm calculator from application data and interpret the result for preliminary pneumatic engineering review.

Calculation workflow

  1. Enter the known application values, including Receiver volume, Start pressure, End pressure.

  2. Run the calculation using one consistent set of units and reference conditions.

  3. Review Free-air delivery in L/min, SCFM, m3/h, then compare the result with the component datasheet and application margin.

Assumptions and limits

  • Keep standard, free-air, and actual compressed-volume reference states consistent throughout the calculation.

  • Confirm compressor, dryer, filter, receiver, pipework, ambient, and operating schedules with measured plant data.

FAQ

Common review questions.

01Tool noteWhy test actual compressor CFM?

Nameplate capacity may not match real output after wear, intake restriction, heat, control settings, or installation conditions.

02Tool noteShould production demand be connected during the test?

For a clean pump-up estimate, isolate the receiver from demand where site procedures allow. Follow lockout, pressure, and safety rules.

03Tool noteWhat should I verify after using the Compressor CFM Calculator?

Check the entered units and reference conditions, then compare the calculated outputs with manufacturer ratings, application safety margins, transient loads, installation losses, and measured machine performance.