Last updated: April 13, 2026

Vapor Pressure of Water Calculator

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Table of contents

Vapor Pressure of Water

The vapor pressure of water is the pressure at which water vapor is in thermodynamic equilibrium with its condensed state. At higher temperatures, the vapor pressure increases.

log₁₀(P) = A − B / (T + C)
23.686
mmHg
31.579
hPa
3.158
kPa
0.03117
atm

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