.UDF File Extension

There are 3 file types use the .UDF file extension:

  1. Universal Disk Format File
  2. Microsoft Excel User-defined Function
  3. Excel User Defined Function

1. Universal Disk Format File

Universal Disk Format File
  • Developer Optical Storage Technology Association
  • Popularity
    3.5 (24 votes)
  • Category Disk Image Files
  • Format Binary

File created in the Universal Disk Format (UDF), a disc imaging format used for storing files on optical media; stores a collection of files using the directory structure specified in the UDF standard; can be used for burning DVDs, CDs, and other optical media; allows files to be deleted and modified on the target disc even after they have been written.

The UDF standard is developed and maintained by the Optical Storage Technology Association (OSTA).

NOTE: Even though the UDF format is commonly used, the ".udf" extension is not. Instead, disc burning applications typically save images in their own formats and then burn them using the UDF standard.

Software's name License Platforms
7-Zip 7-Zip Open Source LinuxWindows
MagicISO MagicISO Commercial Windows
Nero Nero Commercial Windows
Roxio Popcorn Roxio Popcorn Commercial Mac
Roxio Toast Roxio Toast Commercial Mac

Updated: June 30, 2012

2. Microsoft Excel User-defined Function

Microsoft Excel User-defined Function

User-defined script written or recorded in Visual Basic that executes a function in Microsoft Excel; can be created by selecting "Module" from the Insert menu in Excel.

Software's name License Platforms
Microsoft Excel Microsoft Excel Commercial MacWindows
No longer supported by Microsoft Excel No longer supported by Microsoft Excel MacWindows

Updated: October 22, 2006

3. Excel User Defined Function

Excel User Defined Function

User-defined script written or recorded in Visual Basic that executes a function in Microsoft Excel; can be created by selecting "Module" from the Insert menu in Excel.

Software's name License Platforms
Microsoft Excel Microsoft Excel Commercial MacWindows

Updated: July 10, 2006

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