DUM file extension
The table below provides useful information about the .dum file extension. It answers questions such as:
- What is the .dum file?
- What program do I need to open a .dum file?
- How can the .dum file be opened, edited or printed?
- How can I convert .dum files to another format?
Table of Contents
- ✅ CODESYS Device User Management Data
- ✅ QUANTA Dummy Atom File
- 🔄 .dum file converters
- 🚫 .dum file related errors
We hope you find this page helpful and a valuable resource!
2 extension(s) and 0 alias(es) found in database
✅ CODESYS Device User Management Data

The DUM file is a CODESYS Device User Management Data. CODESYS is a software platform especially designed for use in industrial automation projects.
✅ QUANTA Dummy Atom File

The DUM file is a QUANTA Dummy Atom File. QUANTA is a molecular graphics analysis program that integrates a range of computational methods.
Other types of files may also use the .dum file extension.
🚫 The .dum 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 .dum 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 cannot open this file:
example.dum
To open this file, Windows needs to know what program you want to use to open it...
If you don't know how to set the .dum file association, check the FAQ.
🔴 Can I change the extension of files?
Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.
If you have helpful information about the .dum file extension, write to us!