SCFM Calculator
Convert actual volumetric flow to standard conditions
How to Use This Calculator
1
Enter ACFM
Actual volumetric flow at operating conditions.
2
Enter Pressure (psia)
Use absolute pressure, not gauge.
3
Enter Temperature (°F)
Ambient gas temperature at the meter.
Formula
SCFM = ACFM · (P / Pₛₜd) · (Tₛₜd / T)
Pₛₜd = 14.696 psia, Tₛₜd = 60°F (520°R); T = °F + 459.67
Note: Ignores compressibility (Z ≈ 1); acceptable for low pressure gases.
About SCFM
SCFM represents volumetric flow normalized to standard conditions, enabling fair comparison between systems measured at different pressures and temperatures.
Frequently Asked Questions
Is there a single standard?
Standards vary (e.g., 60°F vs 68°F). This tool uses 60°F and 14.696 psia.
What about compressibility?
For high pressure/velocity gases, include Z; we assume Z ≈ 1 here.