All Tools
[ audio bench ]
AIFF to M4A - Online Audio Converter
Convert AIFF to M4A online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
Convert AIFF to M4A
Drop AIFF audio here or click to select
AIFF, AIF
M4A (AAC)
About AIFF to M4A
Convert AIFF to M4A. AIFF is Apple's IFF-based counterpart to WAV with PCM audio. M4A is the MPEG-4 audio container usually holding AAC or ALAC. Check whether the track is AAC or ALAC before picking settings..
Why convert AIFF to M4A?
- Smaller files with M4A lossy compression.
- Keep quality where supported.
- Private, no upload - runs in your browser.
AIFF vs M4A
| Codec | PCM 16-bit | AAC |
|---|---|---|
| Compression | uncompressed | lossy |
| Sample behavior | Full quality kept | Quality set by bitrate |
| Typical use | AIFF is Apple's IFF-based counterpart to WAV with PCM audio. | M4A is the MPEG-4 audio container usually holding AAC or ALAC. |
When not to convert AIFF to M4A
- Skip M4A for archival masters: lossy compression discards detail, so keep the AIFF original.
- Keep a master copy: repeated exports stack small losses, so archive AIFF before batch M4A shares.
Limits
Starting point: AIFF - AIFF is Apple's IFF-based counterpart to WAV with PCM audio. Metadata support is thinner than WAV's; check tags after conversion. Check whether the track is AAC or ALAC before picking settings. Encode M4A (AAC) from AIFF at 256k for music or 128k for speech, starting from the master.
How conversion works
Conversion runs entirely in your browser with FFmpeg WASM. Files never leave your device.
Related conversions
FAQ
How do I convert AIFF to M4A?
Drop your AIFF file onto this page, choose quality and codec settings, then click Convert. The result downloads as M4A instantly. All processing runs in your browser.
What codec is used for M4A?
The default codec for M4A is AAC. You can change audio parameters in Advanced mode.
How do you store my files?
We do not store any processed audio. All conversion happens entirely in your browser using FFmpeg WASM.