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M4A to ALAC (M4A) - Online Audio Converter
Convert M4A to ALAC (M4A) online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
Convert M4A to ALAC (M4A)
Drop M4A audio here or click to select
M4A
ALAC (M4A) (ALAC)
About M4A to ALAC (M4A)
Convert M4A to ALAC (M4A). M4A is the MPEG-4 audio container usually holding AAC or ALAC. ALAC is Apple's lossless codec stored inside M4A files. Stays bit-identical to WAV while tagging like AAC..
Why convert M4A to ALAC (M4A)?
- Larger files than lossy shares with ALAC (M4A) lossless quality.
- Keep quality where supported.
- Private, no upload - runs in your browser.
M4A vs ALAC (M4A)
| Codec | AAC | ALAC |
|---|---|---|
| Compression | lossy | lossless |
| Sample behavior | Quality set by bitrate | Full quality kept |
| Typical use | M4A is the MPEG-4 audio container usually holding AAC or ALAC. | ALAC is Apple's lossless codec stored inside M4A files. |
When not to convert M4A to ALAC (M4A)
- Skip ALAC (M4A) for the smallest share: lossless output stays large, so prefer a lossy target when sending M4A files.
- Keep a master copy: repeated exports stack small losses, so archive M4A before batch ALAC (M4A) shares.
Limits
Starting point: M4A - M4A is the MPEG-4 audio container usually holding AAC or ALAC. Check whether the track is AAC or ALAC before picking settings. Stays bit-identical to WAV while tagging like AAC. Encode ALAC (M4A) (ALAC) from M4A 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.
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FAQ
How do I convert M4A to ALAC (M4A)?
Drop your M4A file onto this page, choose quality and codec settings, then click Convert. The result downloads as ALAC (M4A) instantly. All processing runs in your browser.
What codec is used for ALAC (M4A)?
The default codec for ALAC (M4A) is ALAC. 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.