Fugacity Calculator
Calculate the effective pressure (fugacity) of real gases that accounts for non-ideal behavior.
Z = 1 for ideal gas
Results
Fugacity f: 9.5123 MPa
Fugacity Coefficient φ: 0.951229
Compressibility Factor Z: 0.950000
Deviation from ideal: -4.88%
Fugacity Concepts
Definition: f = φ·P (fugacity = coefficient × pressure)
Ideal gas: φ = 1, f = P
From Z: ln(φ) = ∫₀ᴾ (Z-1)/P dP
Fugacity represents the "effective pressure" for real gases in chemical equilibrium calculations.
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Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
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Formula Source: University Physics
by Young & Freedman
🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.