What happens when you convert AIFF to M4A
| Compression | Lossless → Lossy |
|---|---|
| Size per minute | AIFF ≈ 10.6 MB → M4A ≈ 1.4 MB at 192 kbps |
| Quality | Lossy encode; 192 kbps is transparent for most listeners, 128 kbps is fine for speech |
| Tags | Title, artist and album tags are copied when the target format supports them |
| Opens in | Apple devices, Windows 10/11, Android and browsers |
Sizes are typical values; your files will vary with content and settings.
AIFF Audio Interchange File Format
AIFF is Apple's uncompressed audio format, the Mac equivalent of WAV, used in Logic Pro and GarageBand.
AIFF converterM4A MPEG-4 Audio
M4A is an MPEG-4 container holding AAC audio. iPhone voice memos, iTunes purchases and many recorders save M4A, and it sounds better than MP3 at the same bitrate.
M4A converterHow to use the AIFF to M4A Converter
- 1
Choose a AIFF file or drop it onto the page.
- 2
Review the audio options. The defaults suit most files.
- 3
Click Convert and download your M4A when processing finishes.
Why convert AIFF to M4A?
AIFF files come from Logic Pro, GarageBand, sample packs and audio exported on a Mac. Files are large and Windows apps prefer WAV. Choose M4A for smaller files than MP3 at the same quality, played natively by Apple devices and modern players.
Frequently asked questions
Will the M4A lose quality?
M4A uses lossy compression, so some fine detail is discarded to make the file smaller. At the default quality setting the difference is very hard to see. Raise the quality slider if you need the result to stay closer to the AIFF original.
Will the M4A be smaller than the AIFF?
Usually yes: a minute of audio takes about 10.6 MB as AIFF and about 1.4 MB as M4A at 192 kbps. Lower the bitrate to shrink it further; 128 kbps is plenty for speech.
Questions about privacy, file-size limits or conversion speed are answered in the general FAQ.