M4A to WAV
Convert M4A to WAV.
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Convert M4A to WAV.
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Tool guide
Free Online M4A to WAV Converter
Convert one supported M4A file into a PCM 16-bit WAV in your browser. M4A commonly contains AAC or ALAC audio: decoding AAC cannot restore discarded detail, while ALAC may provide a lossless source for the WAV conversion.
Steps
How it works
- Choose one M4A file up to 150 MB.
- Preview the source and review its duration.
- Decode the supported M4A audio and encode it as PCM 16-bit WAV.
- Preview and download the WAV result.
Highlights
Key features
- Validates M4A input before conversion.
- Creates an uncompressed PCM signed 16-bit WAV.
- Supports AAC or ALAC streams that the browser FFmpeg build can decode.
- Shows progress, duration, audio previews, and output file size.
- Names the WAV from the original M4A filename.
Use cases
Common uses
- Prepare an unprotected M4A recording for a WAV-based editor.
- Convert an Apple-device audio file for compatible desktop software.
- Create a PCM intermediate for an authorized audio project.
- Use supported M4A audio in software that expects WAV.
Notes
Limitations to know
- M4A is a container, and unsupported internal codecs may fail.
- AAC-to-WAV does not recover quality already discarded by AAC compression.
- WAV output is fixed to PCM 16-bit and may not preserve higher bit depth from an ALAC source.
- DRM-protected files are unsupported, and the converter does not bypass copy protection.
- Only one file is processed per run, with no batch mode, parameter controls, or explicit metadata transfer.
FAQ
Frequently asked questions
Does M4A always mean AAC?
No. M4A commonly contains AAC or ALAC, and conversion depends on support for the included codec.
Does converting AAC to WAV restore quality?
No. WAV stores the decoded audio without lossy compression, but cannot restore information previously discarded by AAC.
What WAV format is generated?
The output uses PCM signed 16-bit little-endian audio.
Can this convert protected Apple audio?
No. DRM-protected files are not supported.
Can I batch convert M4A files?
No. This tool handles one M4A file at a time, up to 150 MB.