.FCHK File

The fchk file extension is related to Gaussian, a program that provides state-of-the-art capabilities for electronic structure modeling capabilities.

The fchk file contains saved checkpoint file that is created when a job operation is finished successfully.

MIME types:
chemical/x-gaussian-checkpoint

How to open:

Use Gaussian to work with *.fchk files.

How to convert:

As far as we know, this .fchk file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.