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Air Compressor Calculators

Compressor CFM Converter

Convert compressor free air delivery between CFM, m³/min, l/s and m³/hr.

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About this calculator

Compressor free air delivery (FAD) is quoted in different units depending on the manufacturer and country — CFM, m³/min, litres per second, or m³/hr. This calculator converts a CFM value into all three common metric equivalents at once.

Formula

m³/min = CFM × 0.0283168; l/s = CFM × 0.4719; m³/hr = CFM × 1.699
  • CFMFree air delivery — cubic feet per minute

Worked Example

Given: A compressor datasheet quotes 100 CFM free air delivery.

Result: = 2.83 m³/min = 47.19 l/s = 169.9 m³/hr.

How to Use

  1. Enter the free air delivery in CFM.
  2. Click Calculate to see the equivalent flow in m³/min, l/s and m³/hr.

Important Assumptions

  • Pure unit conversion — does not adjust between different FAD reference conditions (actual, ANR, standard) used by different manufacturers.

Common Mistakes

  • Comparing FAD figures from two manufacturers without checking they use the same reference temperature, pressure and humidity basis.

Frequently Asked Questions

Why do compressor brochures show different units in different countries?

CFM is common in the US and older Indian catalogues, while m³/min and l/s are standard in Europe and most modern metric datasheets — this converter bridges the two systems.

These calculators are provided for informational and estimation purposes. Results depend on the assumptions and input values used. Always verify critical engineering calculations against applicable standards, manufacturer specifications, site measurements, and qualified professional advice.