How to convert AAC to AIFF
- Add your .AAC 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
- AIFF preserves the source exactly but that source is already lossy AAC, so fidelity is not improved.
- File size grows substantially because compression is removed.
- Embedded artwork and tags from the AAC may not be represented in the AIFF file.
Frequently asked questions
Is AAC to AIFF a lossless conversion?
The AIFF itself is lossless and uncompressed, but it only stores the already-lossy AAC audio. So the step from AAC introduces no new loss, yet it also cannot undo the compression AAC applied.
Why convert AAC to AIFF?
AIFF is uncompressed and standard in professional music production, so converting is common when you need an editing-friendly, full-resolution working file rather than a compressed delivery format.
What opens an AIFF file?
Apple Music, QuickTime Player, and VLC all open AIFF. VLC is the reliable cross-platform option, since Windows Media Player does not handle AIFF.
Will the file get much bigger?
Yes. AIFF stores audio uncompressed, so the result is far larger than the AAC, on the order of a WAV file of the same length and sample rate.
