How to convert AU to AIFF
- Add your .AU file - drop it in the box above or click to browse.
- Convert it to .AIFF in a few seconds.
- Download your new .AIFF file.
What to expect
- Classic AU files are often 8-bit µ-law at 8 kHz (telephone quality); the AIFF output inherits that limited quality - the converter is not at fault.
- AU files carry no ID3-style metadata (title, artist, album), so the resulting
.aiffwill have no embedded tags. - Some AU files use the
.sndextension instead of.au- Audacity and ffmpeg handle both identically.
Frequently asked questions
Is converting AU to AIFF lossless?
Yes. AIFF stores uncompressed PCM audio, and so do most AU files, so nothing is discarded during conversion.
Can I convert AU to AIFF on a Mac without installing anything?
Yes - open Terminal and run
afconvert -f AIFF -d LEI16 input.au output.aiff. The afconvert tool is built into macOS.Will the converted AIFF work in GarageBand or Logic Pro?
Yes. AIFF is Apple's native audio format and is fully supported in GarageBand, Logic Pro, and Apple Music.
My AU sounds bad after conversion - did the converter break it?
No - classic AU files recorded at 8-bit µ-law 8 kHz already have limited quality before conversion; AIFF does not degrade the audio further.
Programs that convert AU: Freemake Video Converter · VIP Video Converter · Tiny Audio Converter · Hydrogen
