Convert AIFF to AU
Fast, free AIFF to AU conversion — works in any browser
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aiff
AIFF — Audio Interchange File Format
| File extension | .aiff .aif |
|---|---|
| File category | audio |
| Programs | Apple iTunes Apple QuickTime Player VLC media player Audacity Logic Pro |
| Tech description | https://en.wikipedia.org/wiki/Audio_Interchange_File_Format |
| MIME type | audio/aiff audio/x-aiff |
| Developer | Apple Inc. |
AIFF (Audio Interchange File Format) is an uncompressed audio container developed by Apple Inc. in 1988, based on EA IFF 85. AIFF stores raw PCM audio without compression, preserving full audio fidelity — one minute of stereo CD-quality audio (44.1 kHz, 16-bit) occupies approximately 10 MB. The format supports sample depths from 8 to 32 bits and sampling rates up to 192 kHz, making it a standard choice for professional audio production on macOS. AIFF is natively compatible with Apple iTunes, Logic Pro, GarageBand, and most professional DAWs. An extended variant, AIFF-C (AIFC), supports optional compressed audio codecs.
au
AU format for reliable data storage
| File extension | .au .snd |
|---|---|
| File category | audio |
| Programs | VLC media player Audacity MPlayer Xine Sox |
| Tech description | https://en.wikipedia.org/wiki/Au_file_format |
| MIME type | audio/basic audio/au |
| Developer | Sun Microsystems |
This audio format was developed by Sun Microsystems. It is intended for storing audio files; the file itself consists of three components: the header, the annotation unit, and the audio file itself. What distinguishes this format is the small file size, due to which its sound quality is low. It can be converted into other formats, such as mp3 or MPEG. Although this format is mostly used on personal computers that are powered by operating systems Sun or Unix, AU files can also be opened using other audio players.
FAQ
How to convert AU to AIFF?
Upload your AU file, select AIFF as the output format, and click Convert. The converted file will be ready to download in seconds — no account or installation required.
How long does it take to convert AU to AIFF?
Most AU files convert in seconds. Larger files may take up to a few minutes depending on size and internet speed. You can track the progress bar in real time during conversion.
Is it safe to convert AU files online?
Yes. All uploaded AU files and converted AIFF results are automatically deleted from our servers within 1 hour after conversion. We do not store, share, or access your files.
Can I convert AU on iPhone or Android?
Yes, our converter works on all devices and operating systems — iPhone, iPad, Android, Windows, and macOS. Open the site in your mobile browser, upload the AU file and convert to AIFF without installing any app.
