Thunder Scientific Corporation - Humidity Generation and Calibration Equipment NVLAP - Code 200582-0

Contact Us:

Toll Free: (800) 872-7728
Phone: (505) 265-8701
FAX: (505) 266-6203



HumiCalc® with Uncertainty

HumiCalc with Uncertainty.

The Ultimate in Complex Humidity Conversions



  • Highly Accurate Formulas that Replace Charts and Tables
  • Automatically Applies Enhancement Factors and Temperature/Pressure Corrections
  • User Selectable Units of Temperature, Pressure, Vapor Pressure, Density, and Enthalpy
  • Now Includes the Ability to Calculate Uncertainty and As Found Error


HumiCalc® software is the first of its kind to make simple work of complex humidity conversions. No more charts! No more tables! No more guess work! With its high accuracy formulas, HumiCalc® gives you the right answer every time. The new HumiCalc® with Uncertainty expands on the original HumiCalc® with the ability to calculate complex humidity uncertainties with ease.




  • 1GHz Intel® Pentium® or equivalent processor
  • 256MB of RAM (512MB recommended for complex uncertainty scenarios)
  • Minimum 800 x 600 screen resolution
  • Microsoft® Windows 10 (x86 or x64), Microsoft Windows 8.1 (x86 or x64), Microsoft® Windows 7 (x86 or x64)
  • Microsoft .NET Framework version 4.0
  • Adobe® Acrobat® Reader
  • Internet browser

Uncertainty Functionality

HumiCalc® with Uncertainty can make simple work of Uncertainty budgets by giving you a calculator that performs all your humidity uncertainty calculations automatically.


HumiCalc Main Input Screen.



Input one known humidity parameter, temperature and pressure, then HumiCalc with Uncertainty® computes all other humidity values including:


  • %RH
  • Frost Point
  • Percent by Volume
  • Moist Air Density
  • Grains per Pound
  • Mole Fraction of Dry Air
  • Specific Humidity
  • PPMw
  • Percent by Weight
  • Partial Dry Air Density
  • PPMv
  • Mole Fraction of Vapor
  • Absolute Humidity
  • Mixing Ratio by Weight
  • Enhancement Factors
  • Vapor Pressures
  • Enthalpy
  • Wet Bulb Temperature


NEW Features

Each known item now contains an uncertainty field that you can expand to enter individual uncertainty components.

Individual Uncertainty Component screen.
















Once the calculation is performed, the newly calculated values are displayed along with the expanded uncertainty values at the desired confidence level. Each calculated result can also be expanded to see the individual components that made up the final expanded uncertainty value.

Calculated %RH Uncertainty screen.


Validation Package

HumiCalc with Uncertainty Validation is a series of documents used to confirm that the HumiCalc with Uncertainty application complies with its requirements and specifications. The validation contains around 1,800 pages of test cases composed of detailed mathematical calculations for the core conversion, derivative uncertainty and unit calculations.



  • Detailed requirements explaining the core conversion, derivative uncertainty and unit calculations of HumiCalc with Uncertainty.
  • Individual test cases arranged in a mathematical view that validate a given requirement or set of given requirements.
  • Test cases that are organized in a way that provides a step-by-step validation that is easy to follow and reproduced.
  • Test case to requirement tractability.
  • Pass/Fail results for each test case.

HumiCalc with uncertainty Validation Document can be purchased separately.

Call or e-mail for details, or click the Buy Now button.

Note: When you click the Buy Now button, this will open a new browser window where our Thunder Storefront is located.

HumiCalc with Uncertainty Software

Item: HCU

HumiCalc with Uncertainty® Software

Price: $250.00

Buy Now
HumiCalc with Uncertainty Validation Document

Item: HCV

HumiCalc with Uncertainty Validation Document

Price: $750.00

Buy Now

Demo Version

HumiCalc with Uncertainty Demo

Item: HumiCalc with Uncertainty Demo

HumiCalc with Uncertainty® Software

Free Demo Version

Download Demo

Back to Top


Toll Free: (800) 872-7728 Phone: (505) 265-8701 FAX: (505) 266-6203
 E-mail: | |