Full-service supplier of air separation plants, oxygen and nitrogen generators and CO2 plants. Gas & liquid supplier to end users and to distributors of bulk liquids & packaged gases.

Converter

Toolbox

 
Converter

Toolbox

Psychrometric Calculator
Properties of Air

The properties of air vary from place to place, by time of year, and even hour by hour.  For many practical reasons, from human comfort to industrial process design, the ability to forecast and control the properties of air is important. 

 

These on-line psychrometric calculators make air property determination simple.  Enter three input variables of your choosing, and a consistent set of values for your choice of other properties of will be calculated.   

  • See list of available input and output properties below the English and Metric calculators

  • Select your desired set of properties using the drop-down choices

  • Specify two input properties (e.g. dry bulb temperature and % relative humidity)

  • Specify the site elevation (or the local ambient pressure)  

  • Click "Calculate" to obtain other physical and thermodynamic property values

English (IP) Units

Metric (SI) Units

Input Values
     (Choose 2 Properties + Pressure or Altitude)

Dry Bulb Temperature
Wet Bulb Temperature
% Relative Humidity
Enthalpy of Dry Air
Dew Point
Humidity as Weight Ratio

Altitude (feet or meters)
Pressure (inches or mm) of Mercury (Hg)
Pressure (psia or KPa)

Output Values
       (Display any 4 at one time)

Dry Bulb Temperature
Wet Bulb Temperature
% Relative Humidity
Enthalpy of Dry Air
Dew Point
Specific Volume of Dry Air
Vapor Pressure (Mercury - Hg)
PPM (weight)
PPM (volume)
Humidity as Weight Ratio

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WebPsycH is a psychrometric calculation Java applet program created by the Linric Company.  WebPsycH utilizes standard industry accepted equations and calculations. It is made available for use by visitors to this web site under license. Linric Company produces a family of psychrometric analysis software products tailored for various user platforms, including PsycPro, the chart generation and process analysis software tool which was used to create the sea-level psychrometric charts available for download from this site.  I-P Chart   SI Chart

Universal Industrial Gases, Inc.
2200 Northwood Ave. Suite 3
Easton, Pennsylvania 18045-2239 USA

Phone (610) 559-7967 Fax (610) 515-0945

All material contained herein Copyright 2003 / 2012  UIG.