Request a Tool

Gibbs Phase Rule Calculator

Number of degrees of freedom for the phase rule



Number of Moles


  • F = Number of degrees of freedom
  • C = Number of components
  • P = number of phases in the system
  • Factor = is an integer value in the equation that depends on the temperature

Defination / Uses

The Gibbs phase rule calculator will help you figure out how many degrees of freedom the phase rule.


The phase rule equation developed by Josiah Willard Gibbs (American theoretical physicist and Yale University professor) in 1875 is stated as above mention in formula.


NH₄HCO₃(s) <-> NH₃(g) + CO₂(g) + H₂0(g). There are four compounds, one equation, and two conditions in this problem. C = 4 - 1 - 2 = 1, P = 2 The number of degrees of freedom is equivalent to the following: F = 2 + 1 - 2 = 1