Ammonia Properties Calculator

Calculate Thermodynamic and Transport Properties of Ammonia

Thermodynamic and Transport Properties of Ammonia

The site provides a feature rich, professional quality NH3 Tables web application for calculation of thermodynamic and transport properties of ammonia.

The NH3 Calculator Web application calculates 30 thermodynamic and transport properties of ammonia. It allows 11 different combinations of input variables to be used in calculations.

Input variables that can be used are:

  • Pressure
  • Temperature
  • Enthalpy
  • Entropy
  • Volume
  • Internal energy
  • Quality (vapor mass fraction)

Used Formulations

The "NH3 Tables Calculator" is based on new industrial formulation for ammonia, formulated in Helmholtz energy. It is intended to be used for advanced technical applications.

Equation of state was presented in:

  • "Equations of State for Technical Applications" by R. Span and W. Wagner, International Journal of Thermophysics, Vol.24, No.1, January 2003

For transport properties the library uses equations presented in:

  • "The Viscosity of Ammonia" by A. Fenghour, W. A. Wakeham, V. Vesovic, J.T.R.Watson, J. Millat, E.Vogel
  • "Equations for Thermal Conductivity of Natural Refrigerants" by J. Yata, M. Hori, Y. Isono, and Y. Ueda


The Registration is valid for 5 months (150 days), and it will not be extended automatically. After 5 months if you wish to continue using the premium features of the application you will have to register and create a new account again.

The Registration includes free technical support for the duration of the subscription.

Available Package

$29.95 (150 Days)

This is a 5 months subscription fee for using the NH3Tables Web (NH3 Tables Calculator) online.

  • No limitations for calculation of thermodynamic properties.
  • No limitations for calculation of transport properties.
  • Ammonia turbine calculations.
  • Flash evaporator calculations.
  • Mollier diagrams.
  • Save data to Excel.

User Settings

The following user settings, from the last session, are automatically restored:

  • Units
  • Theme
  • Setup Panel visibility
  • Output Panel visibility
  • Registered users can select a new option during Login process, to be automatically logged-in in the future

Recommended Browsers

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  • Latest Chrome
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  • IE 11.0
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