Files with aup3 extension are audio projects saved in Audacity version 3. Audacity is a free, open source, cross-platform audio software originally released in 2000.

Detailed description

Software that open aup3 file

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AUP3 file extension - Audacity project (version 3.x)

What is aup3 file? How to open aup3 files?

File type specification:

Audio and sound file type icon Audio and sound file type

File extensions aup3 is used in the free, open source, cross-platform audio software Audacity for the default project format since introduction of version 3.

A typical .aup3 file contains all the most information about the project available, but can only be opened in Audacity.

The difference between original aup and .aup3 files is that the latest version of projects keeps everything in a single file (including the audio data), instead separate data folder for the audio chunks.

Projects in the new AUP3 format cannot be opened in versions of Audacity prior to 3.0.0.


The default software associated to open aup3 file:

Audacity icon

Audacity logoAudacity  Microsoft Windows software

Company or developer:

Audacity is a free, open source software for recording and editing sounds. It is available for Mac OS X, Microsoft Windows, GNU/Linux, and other operating systems.

Audacity is able to:

  • Record live audio.
  • Record computer playback on any Windows Vista or later machine.
  • Convert tapes and records into digital recordings or CDs.
  • Edit WAV, AIFF, FLAC, MP2, MP3 or Ogg Vorbis sound files.
  • AC3, M4A/M4R (AAC), WMA and other formats supported using optional libraries.
  • Cut, copy, splice or mix sounds together.
  • Numerous effects including change the speed or pitch of a recording.

Audacity for Mac icon

Audacity logoAudacity for Mac  Apple macOS / Mac OS X software

Company or developer:

Audacity for Mac is free multi-track audio editing tool that allows users to record live audio, convert old tapes to modern formats, edit various audio file types, cut, copy, mix audio data and adds various effects, like change speed of audio etc.

Audacity for Linux icon

Audacity logoAudacity for Linux  Linux/Unix software

Company or developer:

Audacity for Linux is multi-track audio editor and recorder with various features, like recording audio, edit WAV, AIFF, FLAC, MP2, MP3 or Ogg Vorbis files, or cut, copy, splice or mix sounds together.

Help how to open:

Can only be opened to Audacity.

How to convert:

Audacity offers export to numerous audio files, including MP3, WAV or OGG.

Find conversions from aup3 file:

aup3 to aup

aup3 to mp3

aup3 to ogg

aup3 to wav

Find converter to aup3 file type:

aup to aup3

mp3 to aup3

List of software applications associated to the .aup3 file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open aup3 file, edit aup3 file, convert aup3 file, view aup3 file, play aup3 file etc. (if exist software for corresponding action in's database).

Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting aup3 files.

Software that open aup3 file - Audacity project (version 3.x)

Programs supporting the exension aup3 on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for open aup3 file action.

Microsoft Windows:

Apple macOS / Mac OS X:


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