Gas Calculation with GasCalc

Calculation of relevant properties of natural gases, LNG, and biogases

GasCalc software - Gas Calculation


The quality and hence the properties of gases may vary significantly depending on their source. Being able to accurately determine combustion and thermodynamic variables is often of considerable economic importance. The methods and processes used for determining these variables have to comply with statutory requirements. Natural gas variables determined include the superior calorific value required for energy billing and the CO2 emission factor, which is calculated from an analysis of the natural gas for emissions trading purposes.

Precise calculations made easy

The GasCalc software allows a uniform approach to be adopted for calculating different gas properties and has by now become accepted practice in this field. The program is based on complex, highly accurate calculation methods and reflects international standards.

Thanks to its modular structure and flexible integration in Windows, users can tailor applications to their specific needs. Following installation, all program functions are available automatically under Excel and may be selected from a menu. Numerous application examples explain how the program is used.

Please use the link below to download the latest GasCalc software version. Following installation you may access and test some of the GasCalc functionalities for demonstration purposes. If you decide to buy our product, we will release the applications following receipt of your binding order. You can request an offer using the form below.

GasCalc download

You can download the GasCalc 2.6 software licence from SmartSim GmbH via the link below.

The download as well as the installation of the demo version are initially free. Following receipt of your binding order we will release the version by e-mail using a licence file which we will generate. We will be happy to submit an offer.

GasCalc 2.6 Download now (MSI, 88.94 MB)
Software required 

Windows 7 or newer

Microsoft DotNet Framework 4.0

Microsoft Excel 2007 or newer (optional)

Licence Agreement  Download now (PDF)

GasCalc Modules

GasCalc includes the following calculation modules:


E.ON in Essen
SmartSim GmbH
Alfredstr. 81 45130 Essen Dr. Peter Schley