Solve for water vapor pressure giventemperature using the Antoine equation. This calculation should beconsidered approximate due to the use of a fitted equation. Theequation is valid from 1 to 374 Celsius. The calculator takestemperature inputs in kelvin, Celsius, Fahrenheit and Rankine. Theoutput pressure is in millimeter and inch mercury, inches of water,pounds per square inch, Pascal, bar and atmospheres.