Convert M4A to WAV — Free Online Converter
Convert MPEG-4 Audio (.m4a) to Waveform Audio (.wav) online for free. Fast, secure audio conversion with no watermarks or registration.
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About M4A files
M4A holds AAC or Apple Lossless audio in an MP4 container. iPhone voice memos, GarageBand exports and iTunes downloads are often M4A.
People convert M4A to WAV to edit a recording in software that wants WAV, to load it into a transcription or phone system, or to import it into a video editor without trouble.
How we convert M4A to WAV
- Output
- 16-bit PCM WAV.
- Sample rate
- Kept from the M4A unless you pick 44.1 kHz, 48 kHz or 96 kHz.
- Channels
- Keep stereo or switch to mono, which suits voice memos.
- Clean-up
- Normalize, noise reduction and trim are available before conversion.
Common problems and fixes
A voice memo is too quiet to transcribe.
Turn on normalize before you convert so the speech reaches a clear level.
A video editor wants 48 kHz audio.
Set the sample rate to 48 kHz, which is the standard for video.
The WAV sounds no better than the M4A.
That is normal for AAC sources. WAV cannot bring back what the AAC encoder removed. It only makes the file easier to edit.
About M4A to WAV Conversion
WAV (Waveform Audio File Format) is the uncompressed audio standard created by Microsoft and IBM in 1991. Converting M4A to WAV decodes the AAC or ALAC audio inside the M4A and writes it as raw PCM samples. WAV is universally supported by every operating system, DAW, audio editor, and hardware device. This conversion is the go-to when you need uncompressed audio for editing, processing, mastering, or feeding into systems that require raw PCM input.
Why Convert M4A to WAV?
DAWs like Pro Tools, Ableton Live, FL Studio, and Audacity work most efficiently with WAV files. Sample-based instruments and hardware samplers (Akai MPC, Roland SP, Elektron Digitakt) require WAV input. Broadcast and live sound systems often need WAV for reliability — no codec decoding means no latency or compatibility risks. CD mastering requires Red Book-compatible 16-bit/44.1 kHz WAV files.
Common Use Cases
- Importing M4A into DAWs (Pro Tools, Ableton, FL Studio) for editing and production
- Loading audio into hardware samplers that accept only WAV format