Having problems opening a SUB file?

We have programs that can open or convert your SUB files.

Opening SUB files

Did your computer fail to open a SUB file? We explain what SUB files are and recommend software that we know can open or convert your SUB files.

What is a SUB file?

Files that contain the .sub file extension are usually files that store information about movie subtitles. These files contain data about the movie subtitles, such as the subtitle text, the point at which each subtitle should be displayed and information about the corresponding video file.

SUB files are most often assigned by the CaSat Suite subtitle software and the files that are saved with the .sub extension are usually used for the subtitles in DivX formatted movies.

It is important to note that the SUB file does not contain any actual video data. Just the references for the subtitle information.

Try a universal file viewer

Try a universal file viewer like Free File Viewer. It can open over 200 different types of files - and most likely yours too. Download Free File Viewer here.

About File Extension SUB

File.org aims to be the go-to resource for file type- and related software information. We spend countless hours researching various file formats and software that can open, convert, create or otherwise work with those files.

If you have additional information about the SUB file format or software that uses files with the SUB suffix, please do get in touch - we would love hearing from you.