UNF

unf icon

Btrieve unformatted data

File type: Various data file

A .unf file contains unformatted data associated with Btrieve, a database manager for Windows and NetWare.

Btrieve stores and retrieves records in indexed files using the B-tree method.

Found 2 different file type records with the same unf filename suffix.

What is unf file?

File type category:
Various data file

Date updated: October 9, 2026

Btrieve was originally developed and marketed by SoftCraft in 1982 and was later developed by Novell for NetWare. It was used to create and manage indexed database files.

A .unf file holds unformatted Btrieve data. Btrieve functions can be called from many common programming languages, allowing applications to work with the data.

The format is associated with older Btrieve installations on NetWare and Microsoft MS-DOS, as well as with Btrieve software for Windows.

How to open unf file?

Open a .unf file with the Btrieve application or a compatible Btrieve utility that created or manages the database. The file is not intended to be opened as a document in a text editor.

Because Btrieve is legacy software, opening the file may require the original NetWare, MS-DOS, or Windows environment and the associated Btrieve database application.

How to convert unf file?

A .unf file is not a standard document format and cannot normally be converted with a general-purpose converter.

To extract its records, use a compatible Btrieve application or database utility that can read the file and export the data to a format supported by the target database.

Suggested software to open unf file:

Associated software actions with the unf file

Software applications that handle other tasks involving unf files:

Microsoft MS-DOS

Universal NES Image Format

File type category:
Emulator file

Date updated: September 6, 2019

The unf file extension is associated with the Universal NES Image Format, a disk image file format used to store ROM captured from video game cartridges used by Nintendo Entertainment System console.

The unf file stores ROM image from NES cartridge.

How to open unf file?

Use Nestopia to open *.unf files.

How to convert unf file?

Probably cannot be converted to anything else.

Suggested software to open unf file:

Associated software actions with the unf file

Software applications that can open unf files:

Microsoft Windows

Software applications that handle other tasks involving unf files:

Microsoft Windows

Related file extensions