# Water Vapor Pressure and Boiling Point Equations Formulas Calculator

## Science Physics Chemistry Thermodynamics Steam

Antoine Equation. Solve for temperature. Notes:
• This calculator uses a fitted equation to calculate the saturated vapor pressure. Therefore, the calculated values should be considered approximate. The equation is has a valid range of 1°C to 374°C and 4.89 mmHg to 162991 mmHg.
• The constants for the Antoine formula are located below. This calculator uses the first set of constants for temperatures below 100° Celsius. The equation requires temperature to be in Celsius and pressure in mmHg. This calculator automatically makes the conversion.
• Water will boil when the atmospheric pressure is less than the vapor pressure for a given temperature.

#### Inputs:

water vapor pressure

#### Conversions:

water vapor pressure
= 0
= 0
millimeter of mercury

temperature
= NOT CALCULATED

#### Other Units:

Constants Table
 Water Temperature Range A B C 1°C ≤ T ≤ 100°C 8.07131 1730.63 233.426 99°C ≤ T ≤ 374°C 8.14019 1810.94 244.485

Change Equation
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Antoine Equation Solve for saturated vapor pressure. Solve for temperature. Internet application to solve for the vapor pressure of water.This includes a line graph of temperature versus pressure.

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