GROMOS96 (A) chemical modeller input file
File type: Various data file
Files with the .gr96a file extension are input files associated with the GROMOS96 molecular-dynamics modelling software.
They provide data used by GROMOS96 during a chemical modelling or simulation task.
File type category:
Various data file
Date updated: October 2, 2026
GROMOS96 is a molecular-dynamics simulation package and force-field system developed at the University of Groningen and ETH Zurich. The .gr96a file extension identifies a GROMOS96 (A) chemical modeller input file.
The file belongs to the input side of a GROMOS96 workflow rather than representing a simulation result. Its contents are intended for processing by the GROMOS software and may be read together with other files required for a particular modelling task.
Open a .gr96a file with the GROMOS96 software that created or expects it. It is an input file, so it is normally supplied to a GROMOS96 modelling or simulation task rather than opened as a document.
If the file needs to be inspected, a plain-text editor may be able to display its contents. Avoid changing the file unless the required GROMOS96 input syntax is known.
A .gr96a file is a software-specific input file and normally has no useful general-purpose conversion. To obtain data in another format, run the input through GROMOS96 and export or process the resulting molecular-modelling data with a tool that supports the desired target format.
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