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SCFM Calculator – Standard Cubic Feet per Minute

Convert actual airflow (ACFM) to standard cubic feet per minute (SCFM), correcting for actual pressure and temperature conditions.

ft³/min
psia
°F

What SCFM means

Standard cubic feet per minute (SCFM) expresses airflow normalized to standard reference conditions (typically 14.7 psia and 60°F), allowing fair comparison of compressed air or gas flow measurements taken under different actual conditions.

The formula

SCFM = ACFM × (Pactual/Pstandard) × (Tstandard/Tactual), where ACFM is the actual flow rate at actual conditions, and pressures and temperatures (in absolute units — psia and Rankine) are used to correct for the difference from standard reference conditions.

This is the standard compressed-air industry correction formula; note that different standards bodies (CAGI, ASME, ISO) define slightly different reference conditions, so always confirm which standard applies to your application.

Last reviewed August 2026