Free Tools/Psychrometric Calculator

Psychrometric Properties Calculator

Select your two known properties, enter the values, and calculate the complete moist air state. Available in SI and IP units.

Select unit system
Known Properties
°C
%
Barometric Pressure
kPa
Sea-level = 101.325 kPa
Results
Reference: ASHRAE Handbook of Fundamentals, Chapter 1 - Psychrometrics.

Disclaimer: Results are for educational and reference purposes only. CANETCO makes no warranty as to the accuracy of these calculations for any specific application. Always verify results with a qualified licensed engineer before use in design, construction, or any professional application. CANETCO accepts no liability for decisions made based on outputs from this calculator.

The psychrometric chart is more than a property lookup tool.

In the field, it is the primary instrument for diagnosing HVAC system problems - identifying what is wrong and why. CANETCO covers this in depth in two courses: Psychrometry of HVAC Systems and Fundamentals, Sizing, Selection, and Operation of HVAC Systems.

Psychrometry Course HVAC Fundamentals Course