Browse Definitions :
File Extension

UDF File Format

User-Defined Function (Microsoft Excel)

UDF is a user-defined file format for Microsoft Excel. UDF stands for User-Defined Functions. UDF files are made using Visual Basic for Applications and allow the user to create custom functions which can be used repeatedly on numerous spreadsheets and work books. UDF files can be created in Excel by selecting the “Module” option in the “Insert” menu.

MIME: application/excel, application/x-excel

Learn more about .UDF files:

Search on IT Knowledge Exchange for .UDF-related questions.

This was last updated in July 2010
Browse File Extensions Alphabetically:

Ask a Question. Find an Answer.

Ask your peers a question about this file extension.

Ask a Question

Join the conversation

4 comments

Send me notifications when other members comment.

Please create a username to comment.

While looking through an archive of old backup disks. I found one that showed 29mb of data on disk, but would not open. Further exploration showed it had a udf format on disk, from July 2009.
Cancel
Our Ricoh devices backup file is a UDF file.
Cancel
Created a AVCHD video using Serif Movieplus software. this created a UDF (noted in info file) disc which so far will not play on anything I have. I believe it might play on Blue ray drive, but not yet tried this yet.
Cancel
https://en.wikipedia.org/wiki/Universal_Disk_Format

It's ALSO a newer version of the .iso format for CD/DVD images on disk.
Cancel

-ADS BY GOOGLE

SearchCompliance

SearchSecurity

  • time-based one-time password (TOTP)

    A time-based one-time password (TOTP) is a temporary code, generated by an algorithm, for use in authenticating access to ...

  • Security Operations Center (SOC)

    A security operations center (SOC) is a command center facility for a team of IT professionals with expertise in information ...

  • incident response team

    An incident response team is a group of IT professionals in charge of preparing for and reacting to any type of organizational ...

SearchHealthIT

SearchDisasterRecovery

  • disaster recovery team

    A disaster recovery team is a group of individuals focused on planning, implementing, maintaining, auditing and testing an ...

  • cloud insurance

    Cloud insurance is any type of financial or data protection obtained by a cloud service provider. 

  • business continuity software

    Business continuity software is an application or suite designed to make business continuity planning/business continuity ...

SearchStorage

  • storage class memory (SCM)

    Storage class memory (SCM) is a type of NAND flash that includes a power source to ensure that data won't be lost due to a system...

  • Hadoop as a service (HaaS)

    Hadoop as a service (HaaS), also known as Hadoop in the cloud, is a big data analytics framework that stores and analyzes data in...

  • blockchain storage

    Blockchain storage is a way of saving data in a decentralized network which utilizes the unused hard disk space of users across ...

Close