M4A to WAV - Online Audio Converter

Convert M4A to WAV online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.

Convert M4A to WAV

[+] Drop M4A audio here or click to select M4A

Output format

WAV (PCM 16-bit)

Mode[i]

Simple Advanced

Quality[i]

Sample Rate[i]

Channels[i]

About M4A to WAV

Convert M4A to WAV. M4A is the MPEG-4 audio container usually holding AAC or ALAC. WAV is Microsoft's RIFF container, usually holding 16-bit PCM. Files run about 10 MB per minute, so archive as FLAC..

Why convert M4A to WAV?

Larger files than lossy shares with WAV uncompressed quality.
Keep quality where supported.
Private, no upload - runs in your browser.

M4A vs WAV

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.	WAV is Microsoft's RIFF container, usually holding 16-bit PCM.

When not to convert M4A to WAV

Skip WAV 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 WAV 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. Files run about 10 MB per minute, so archive as FLAC. Encode WAV (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 WAV?

Drop your M4A file onto this page, choose quality and codec settings, then click Convert. The result downloads as WAV instantly. All processing runs in your browser.

What codec is used for WAV?

The default codec for WAV 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.