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Both calculators run independently — change the inputs on either side to compare results.

Psychrometric Calculator

Compute dew point, wet-bulb temperature, humidity ratio, or enthalpy from dry-bulb temperature, relative humidity, and pressure. Essential for HVAC engineers, meteorologists, and building scientists.

Dry Bulb Temperature (°C)

Relative Humidity (%)

Atmospheric Pressure (kPa)

Property to Calculate

Fill in the required fields to see your result.

Thermodynamics

Entropy Change Calculator

Compute the entropy change of a substance undergoing a constant-pressure heating or cooling process. Used in thermodynamics courses and engineering analyses of heat exchangers, turbines, and compressors.

Mass (kg)

Specific Heat Capacity (J/kg·K)

Initial Temperature (K)

Final Temperature (K)

Fill in the required fields to see your result.

Key differences

	Psychrometric Calculator	Entropy Change Calculator
Category	Thermodynamics	Thermodynamics
Inputs required	4	4
Result	Psychrometric Property (°C)	Entropy Change (J/K)
What it does	Compute dew point, wet-bulb temperature, humidity ratio, or enthalpy from dry-bulb temperature, relative humidity, and pressure. Essential for HVAC engineers, meteorologists, and building scientists.	Compute the entropy change of a substance undergoing a constant-pressure heating or cooling process. Used in thermodynamics courses and engineering analyses of heat exchangers, turbines, and compressors.