SUB file: How can I open a .SUB file?
The table below provides useful information about the .sub file extension. It answers questions such as:
- What is the .sub file?
- What program do I need to open a .sub file?
- How can the .sub file be opened, edited or printed?
- How can I convert .sub files to another format?
We hope you find this page helpful and a valuable resource.
✅ CloneCD Sub Channel Data

The SUB file is a CloneCD Sub Channel Data. CloneCD SUB file, the sub channel data of all tracks of the CD.
✅ MicroDVD Subtitle Format File

The SUB file is a MicroDVD Subtitle Format File. SUB is a subtitle file format for digital video. MicroDVD is a media player application designed to play DVD videos along with subtitles, originally developed by Tiamat Software.
✅ VobSub Subtitle

The IDX file is a VobSub Subtitle Data.
✅ WRAP SIMD Sub-monthly Time Step Simulation Data

The SUB file is a WRAP SIMD Sub-monthly Time Step Simulation Data. Water Rights Analysis Package (WRAP) simulates management of the water resources of river/reservoir systems subject to priority-based water allocation and performs statistical frequency and reliability analyses of simulation results.
✅ SubmitWolf Website Submission Project

The SUB file is a SubmitWolf Website Submission Project. SubmitWolf is a truly sophisticated automated Submission Wizard for the promotion of Web Sites on the Internet.
✅ SWAT Subbasin Input Data

The SUB file is a SWAT Subbasin Input Data. SWAT (Soil Water Assessment Tool) is an hydrology model with the following components: Weather, surface runoff, return flow, percolation, evapotranspiration, transmission losses, pond and reservoir storage, crop growth and irrigation, groundwater flow, reach routing, nutrient and pesticide loading, water transfer.
✅ IBM Rational Rose Component Package

The SUB file is an IBM Rational Rose Component Package. The IBM Rational Rose is a visual modeling tool for software development using UML.
✅ Insight II Subset Definition

The SUB file is an Insight II Subset Definition. Insight II is a comprehensive graphic molecular modeling program.
⚠ Be careful with .sub files.
It's important to know that the .sub file extension can be used by various programs, not just the ones you expect. This includes potentially harmful software or malware that might create .sub files. Be cautious when dealing with .sub files from unknown sources.
🚫 The .sub file extension is often given incorrectly!
According to the searches on our site, these misspellings were the most common in the past year:
Is it possible that the filename extension is misspelled?
We found the following similar file extensions in our database:
🔴 Can't open a .sub 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:
Select an app to open this .sub file
It means that the operating system does not have a default app associated with the .sub file type. To resolve this issue and open the file, you can take the following steps:
- Right-click on the .sub file. A context menu will appear.
- From the context menu, select Open with. Windows will display a list of recommended apps.
- If the desired app is listed, select it from the provided options.
- If you cannot find the appropriate app, you may need to install software that supports the specific file type.
If you don't know how to change the default app for the .sub file, check the FAQ.
🔴 Can I change the extension of files?
Changing the filename extension of a file is not a good idea. The extension of a file serves as a hint to the operating system and various software programs about the type of data contained within the file. When you alter a file's extension, you essentially modify how software applications interpret and handle that file. Every file has a specific format, also known as its file type or file format. The problem is, changing the file extension does not change the file format.
If you have helpful information about the .sub file extension, write to us.