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Antoine Equation Vapor Pressure Calculator

log₁₀ P = A − B / (C + T) for a pure liquid.

Compute the saturated vapor pressure of a pure liquid at a given temperature using the Antoine equation log₁₀ P = A − B / (C + T), with the three substance-specific Antoine constants and T in °C (P in mmHg).

Dr. Helena Ortiz By Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

°C

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

log₁₀ P = A − B / (C + T); T in °C, P in mmHg.

In depth

Compute the saturated vapor pressure of a pure liquid at a given temperature using the Antoine equation log₁₀ P = A − B / (C + T), with the three substance-specific Antoine constants and T in °C (P in mmHg).