Convert M4A to WAV — Free & Private
M4A files from iPhone Voice Memos, GarageBand, and iTunes are AAC-compressed. Audacity needs the FFmpeg library to open them. Premiere Pro and DJ software like Serato and Rekordbox work best with WAV. Convert once, use everywhere — no codec headaches.
iPhone Recordings to Professional Workflow: M4A to WAV
Apple's M4A format works perfectly within the Apple ecosystem — iPhone Voice Memos, GarageBand projects, and iTunes purchases all use M4A (AAC) as the default. But once you step outside that ecosystem, M4A starts creating friction. Audacity, the most widely used free audio editor, requires a separately installed FFmpeg library to open M4A files — a step many users don't realise is needed until they hit an error. Premiere Pro handles M4A on macOS but behavior on Windows varies by codec pack. DJ software like Serato DJ and Rekordbox support WAV universally across both Mac and Windows; M4A support on Windows Serato is inconsistent. The solution in every case is the same: convert M4A to WAV before importing. WAV is the universal handshake format for professional audio — uncompressed, universally supported, and no decoder required. This conversion doesn't improve quality (M4A's AAC compression is lossy and that cannot be undone), but it removes every compatibility barrier between your Apple recordings and any professional tool you want to use them with.
How to Convert M4A to WAV
Click "Convert Now" — opens on the Audio tab with M4A → WAV pre-selected.
Drag & drop your M4A file or click Browse. Works with Voice Memos, GarageBand exports, and iTunes files.
FFmpeg.wasm processes your audio entirely in your browser — no server, no queue.
Your uncompressed WAV file downloads automatically, ready for Audacity, Premiere, or your DAW.
Why WAV Is Better for These Workflows
- 🎛️ Audacity opens WAV without FFmpeg — M4A requires the separate FFmpeg library; WAV works out of the box in every Audacity version
- 🎬 Premiere Pro timeline tracks prefer WAV — especially on Windows where AAC codec availability varies by system
- 🎧 Serato and Rekordbox handle WAV reliably — on both Mac and Windows, no codec pack required
- 🔊 No AAC decoder required — WAV is uncompressed PCM, readable by every audio application on every platform
- 🎙️ Universal delivery format — WAV is the standard interchange format for audio post-production studios and broadcast
- 🔒 100% private — FFmpeg.wasm processes audio entirely in your browser, nothing is uploaded
Features
FFmpeg.wasm
Industry-standard FFmpeg compiled to WebAssembly — runs fully in your browser.
100% Private
Your audio never leaves your device. No upload, no cloud processing.
Uncompressed Output
WAV output is uncompressed PCM — the format every DAW and audio editor accepts.
Batch Convert
Convert multiple M4A files to WAV in one session — useful for Voice Memo archives.
Free
No account, no fee, no watermarks. Unlimited conversions.
Works on Mobile
Convert on iPhone or Android — no desktop app needed.