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M4A to LPCM - Online Audio Converter
Convert M4A to LPCM online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
Convert M4A to LPCM
Drop M4A audio here or click to select
M4A
LPCM (PCM 16-bit)
About M4A to LPCM
Convert M4A to LPCM. M4A is the MPEG-4 audio container usually holding AAC or ALAC. LPCM is linear PCM as carried on DVD and Blu-ray discs. Disc rips may interleave channels; verify mapping after conversion..
Why convert M4A to LPCM?
- Larger files than lossy shares with LPCM uncompressed quality.
- Keep quality where supported.
- Private, no upload - runs in your browser.
M4A vs LPCM
| Codec | AAC | PCM 16-bit |
|---|---|---|
| Compression | lossy | uncompressed |
| Sample behavior | Quality set by bitrate | Full quality kept |
| Typical use | M4A is the MPEG-4 audio container usually holding AAC or ALAC. | LPCM is linear PCM as carried on DVD and Blu-ray discs. |
When not to convert M4A to LPCM
- Skip LPCM 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 LPCM 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. Disc rips may interleave channels; verify mapping after conversion. Encode LPCM (PCM 16-bit) 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 LPCM?
Drop your M4A file onto this page, choose quality and codec settings, then click Convert. The result downloads as LPCM instantly. All processing runs in your browser.
What codec is used for LPCM?
The default codec for LPCM is PCM 16-bit. 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.