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Mobile Psychrometric Calculator

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This software is provided by Dr Yi Zhang free of charge for non-commercial use. It is proved on the basis of “as is”. Any express or implied warranties, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose are disclaimed. In no event shall Dr Yi Zhang, his employer, or the hosting service provider of this webpage be liable for any direct, indirect, incidental, special, exemplary, or consequential damages, (including, but not limited to, procurement of substitute goods or services; loss of use, data, or profits; or business interruption) however caused and on any theory of liability, whether in contract, strict liability, or tort (including negligence or otherwise) arising in any way out of the use of this software.

The use of the software downloaded from this webpage is done at your own discretion and risk and with agreement of the foregoing disclaimer.

Get it here

Please download the .zip package, unpack, and install with your phone's utility tool. (8.41 KiB, 442 downloads)


Input screen Select parameters screen

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john, 2011/11/25 21:34

thanks for the software it helps alot.. thank you

Yi Zhang, 2012/01/01 02:11

You are welcome.

martin vorum, 2012/03/26 21:24

Hello – I am researching ways to account for localized effects of elevation and humidity in calculations of evaporative waste heat disposal. Specifically I want to understand the inner math of the heat/mass transfer calculations in order to imbed an APPROXIMATE shortcut in a simplified model of evaporative water consumption for cooling towers.

I'm not looking to create complete psychrometric substitutions at reduced pressures that result from increasing elevation (and localized absolute humidity trends), but rather to understand quantitatively how to adjust a model of sea-level performance …… unless perhaps an explanation of the details gives me such a clear view that I can't avoid a basic psychrometric approach. My fixation on simplicity results from time and budget constraints, not so much from laziness (though that could be a consideration, too ….. ;-) )

Thanks for any help – please respond to my e-mail address at

Yi Zhang, 2012/04/12 15:48

Hi Martin, I think the psychrometrics routines take barometer reading as a parameter; so there is no trouble to produce results at any atmospheric pressure level. I need to go back and check the program to see if this is true, though…