Gas Volume Correction Calculator
Calculates the Fixed Pressure Factor (FPF) to correct measured gas volumes to base (standard) conditions per AGA Report No. 3 and AGA-7. The FPF accounts for pressure, temperature, and compressibility differences between flowing and base conditions—essential for accurate custody transfer metering and sales accounting.
Base Conditions
psia
°F
-
Contract base: 14.73 psia @ 60°F (common US); 14.696 psia also used
Meter Conditions
psig
°F
Mcf
Tip: Enter flowing conditions measured at the meter location
Calculates the Fixed Pressure Factor (FPF) to convert gas volumes measured at flowing conditions to standard base conditions per AGA Report No. 3 and AGA-7.
FPF Components:
Fpv (Pressure): Pf/Pb ratio correction
Ftf (Temperature): Tb/Tf absolute temp ratio
Fgr (Supercompressibility): Zb/Zf real gas correction