FCH file format description

Many people share .fch files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .fch file can be edited, converted or printed with. On this page, we try to provide assistance for handling .fch files.

1 filename extension(s) found in our database.

.fch - Gaussian Formatted Checkpoint File

The FCH data files are related to Gaussian. The FCH file is a Gaussian Formatted Checkpoint File. Gaussian is an electronic structure programs. Designed to model a broad range of molecular systems under a variety of conditions, it performs its computations starting from the basic laws of quantum mechanics.

Data files
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Gaussian Formatted Checkpoint File related extensions:
Gaussian Checkpoint File
Gaussian Cube Data
Gaussian Two-Electron Integral Derivative File
Gaussian 94 Data
Gaussian Input Data
Gaussian Input Data

Naturally, other applications may also use the .fch file extension. Even harmful programs can create .fch files. Be especially cautious with .fch files coming from an unknown source!

Can't open a .fch file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .fch file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

bch, cch, cfh, ch, dch, ech, fc, fcb, fcg, fcm, fct, fcu, fh, fhc, fsh

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

Entrypoint 90 Batch Data
Anno 2070 FC Configuration
Canute FHC Data FIle
QLogic FibreChannel Firmware Code
DipTrace Schematic Document
Campaign Cartographer Data

Operating systems

DataTypes.net currently supports the following operating systems:

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

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DataTypes.net >> FCH file