M4A to WAV gives you uncompressed PCM that imports cleanly into editors. If the source is ALAC, no quality is lost; if AAC, lost detail stays lost. The file grows large.
About M4A
Common audio container in Apple ecosystem
M4A is an MPEG-4 audio container, usually AAC or ALAC encoded, widely used across Apple devices and iTunes with a good balance of size and quality.
- Good balance of size and quality
- Native to the Apple ecosystem
- Limited support on some non-Apple players
About WAV
Uncompressed lossless format
WAV typically stores audio as uncompressed PCM, preserving the exact original signal. It is ideal for editing and professional use, but produces large files.
- Lossless and uncompressed
- Simple structure, easy to edit
- Large file size, not ideal for streaming
M4A to WAV FAQ
Will converting M4A to WAV lose quality?
If your M4A file is AAC (lossy), converting to lossless WAV adds no new degradation — but already-lost quality cannot be restored. If it is ALAC (lossless), no quality is lost at all.
Will the file size change after conversion?
Converting to a lossless format (WAV) usually increases size, while converting to a lossy format (MP3, AAC) usually decreases it, depending on the chosen bitrate and sample rate.
How do I batch convert M4A to WAV?
Just drop multiple M4A files in; they are converted to WAV one by one via a queue. You can download them individually or as a single ZIP.