Water Vapor Saturation Pressure Calculator

How to Use the Calculator

1. Enter the temperature in degrees Celsius (°C) in the "Temperature" field.
2. The Antoine equation constants (A, B, C) are pre-filled and represent the default constants for water. These can be adjusted if needed.
3. Click the "Calculate" button to compute the saturation vapor pressure.
4. The result will be displayed in millimeters of mercury (mmHg).
5. Use the "Reset" button to clear all input fields and start over.

Working Principle

The saturation vapor pressure of water at a given temperature can be calculated using the Antoine equation:

P = 10^A * exp((B * T) / (C + T))

Where:

• P = Saturation Vapor Pressure (mmHg)
• T = Temperature (°C)
• A, B, C = Antoine equation constants specific to the substance (in this case, water)

This calculator uses the default constants for water, which are valid for a temperature range of -50°C to 100°C.

Applications

The saturation vapor pressure is an important parameter in meteorology, climate science, and engineering. It is used to:

• Calculate humidity and dew point
• Model atmospheric processes
• Determine boiling points at different pressures
• Design HVAC systems