CHK File Type

- The quick facts

What are CHK files and how to open them

Are you having problems opening a CHK file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.

What is a CHK file?

CHK files have multiple uses, and CHKDISK Fragment is one of them.

CHKDISK Fragment File

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 Windows operating system runs the ScanDisk and CHKDISK checking applications to find errors that may be located on the hard drive. These errors are then written out as CHK files. Often 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

Important: Different programs may use files with the CHK file extension for different purposes, so unless you are sure which format your CHK file is, you may need to try a few different programs.

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

Last updated: June 19, 2022

More file formats using the CHK extension

Through our research of CHK files, we know that the following formats exist. However, we have not yet analyzed them in detail.

  • PolySpace Check Results File

Various apps that use files with this extension

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.

Help us help others helps thousands of users every day, and we would love to hear from you if you have additional information about CHK file formats, example files, or compatible programs. Please use the links below or email us at to discuss further.