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Vapor Pressure of Water Calculator
Calculate saturation vapor pressure of water at given temperatures
Formula (Antoine Equation for Water): log10(P) = A − [B / (T + C)]
Calculates pure water vapor pressure across standard ambient temperature ranges.
Calculates pure water vapor pressure across standard ambient temperature ranges.
Temperature Parameter
Calculation Results
⚠️ Vapor pressure calculations for water depend heavily on accurate temperature inputs. At 100 °C, water vapor pressure reaches 101.325 kPa (1 atm), which corresponds to the standard boiling point at sea level.