CHK File - opening and understanding

Did your computer fail to open a CHK file? We explain what they are used for and recommend software that we know can open or otherwise handle your .CHK files.

What is a CHK file?

The .chk file extension is most commonly associated with the Sophos Anti-Virus software application. The CHK files that are used by the software contain database files that reference different software reporting features and configuration settings.

The .chk file extension is also associated with Windows file fragments. These file fragments are fragments of files that have been cleaned from the hard drive by the ScanDisk or CHKDISK disk checking applications.

The ScanDisk and CHKDISK checking applications are run by the Windows operating system to find errors that may be located on the hard drive. These errors are then written out as CHK files. Oftentimes these files can be removed, as the information contained within them is also stored elsewhere on the user's computer.

How to open CHK files

You will need a program compatible with the specific file you are trying to open, as different programs may use files with file extension CHK for different purposes.

While we have not verified the apps ourselves yet, our users have suggested 4 different CHK openers which you will find listed below.

Suggest another file format using extension CHK

While we know of one file format using the .CHK file extension, there may be more. It is widespread that different programs use files with the same file extension for very different types of data. Please let us know if you are aware of a different kind of .CHK file.

Various viewers for this file format

These apps are known to open certain types of CHK files. Remember, different programs may use CHK files for different purposes, so you may need to try out a few of them to be able to open your specific file.

We have not verified any software that we know for certain will work with CHK-files on Mac. If you know one, please use the 'Suggest a program' link below and tell us about it!
We have not verified any web services that we know for certain will work with CHK-files. If you know one, please use the 'Suggest a program' link below and tell us about it!