Convert iTunes Protected AAC (.m4p) to Waveform Audio (.wav) online for free. Fast, secure audio conversion with no watermarks or registration.
Upload your .m4p file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .wav file when it's ready.
M4P is Apple's compressed DRM-protected audio format using AAC encoding at 128-256 kbps, while WAV (Waveform Audio File Format) is the uncompressed audio standard co-developed by Microsoft and IBM. Converting M4P to WAV decodes the AAC audio and writes it as raw PCM samples in the RIFF WAV container — the most universally compatible uncompressed audio format in existence.
WAV is the common denominator of digital audio. Every operating system, audio editor, DAW, hardware player, and programming library supports WAV natively. If you need your old iTunes audio in the most universally compatible uncompressed format possible, WAV is the definitive choice.
WAV is the standard input format for professional audio tools across all platforms. Pro Tools, Ableton Live, FL Studio, Audacity, Logic Pro, and virtually every other DAW handles WAV with zero import friction. If you need to bring old iTunes purchases into a production environment for editing, mixing, or processing, WAV ensures compatibility regardless of what platform or software you use.
WAV is also the safest format for audio processing pipelines. Any tool that reads audio can read WAV — there are no codec licensing issues, no decoding quirks, and no compatibility surprises. For CD burning, WAV is the native format (Red Book CD uses 16-bit 44.1 kHz PCM, which is exactly what WAV stores). Converting M4P to WAV prepares your audio for any downstream use without format-related obstacles.
FFmpeg decodes the AAC audio from the unprotected M4P and writes uncompressed PCM audio (16-bit signed integer, little-endian) at the original sample rate (typically 44.1 kHz stereo) into a RIFF WAV container. The command uses -c:a pcm_s16le for standard CD-quality output. File sizes increase substantially — a 4-minute track at 128 kbps M4P (~3.8 MB) becomes approximately 40 MB as 16-bit 44.1 kHz WAV.
WAV output contains the full decoded audio at uncompressed PCM quality, but fidelity cannot exceed the original AAC encoding. A 128 kbps M4P has already discarded audio information during AAC compression — decompressing to WAV does not recover those frequencies. The WAV file is larger but not higher quality than the M4P source. From 256 kbps iTunes Plus sources, the decoded WAV is perceptually transparent.
| Device | M4P | WAV |
|---|---|---|
| Windows PC | Partial | Native |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser | No |
Resolution: N/A
Bitrate: 320 kbps
OGG Vorbis preferred
Resolution: N/A
Bitrate: 256 kbps
AAC format required
Resolution: N/A
Bitrate: 128 kbps
Lossless FLAC/WAV for best quality
Resolution: N/A
Bitrate: 128 kbps
MP3 mono for spoken word
M4P to WAV is the universal safe choice for anyone needing uncompressed audio from their iTunes library. The output works in every audio application, on every platform, without exceptions.
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| Native |
| الميزة | M4P | WAV |
|---|---|---|
| الاسم الكامل | iTunes Protected AAC | Waveform Audio File Format |
| الامتداد | .m4p | .wav |
| الأفضل لـ | AAC audio codec | Lossless quality |