Enter the Antoine constants A, B, C and the temperature T into the Antoine Equation Calculator. The calculator will evaluate the saturation vapor pressure (vapor pressure) from the Antoine equation.

Antoine Equation Calculator

General Antoine
Vapor Pressure / Boiling T

Enter any 4 values to calculate the missing variable

Pressure From Antoine Equation Formula

The following example problem outlines the steps and information needed to calculate the Pressure From the Antoine equation.

P = 10 ^ {(A- (B/(C+T)))}

Variables:

  • P is the saturation vapor pressure (in the same pressure units used to fit the Antoine constants; commonly mmHg in this form).
  • A, B, and C are Antoine constants for a given substance (they depend on the pressure and temperature units used); T is the temperature (typically in °C for this form).

How to Calculate Pressure From Antoine Equation?

The following steps outline how to calculate the Pressure From the Antoine equation.


  1. First, determine the Antoine constants A, B, and C for the substance and the temperature T.
  2. Next, gather the formula from above = P  = 10 ^ (A- (B/(C+T))).
  3. Finally, calculate the Pressure From the Antoine equation.
  4. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

A = 8, B = 1708, C = 233, and T = 99 °C

P  = 10 ^ (A- (B/(C+T))) = ?