M4A to WAV
Decode an .m4a file (an MP4 container holding an AAC audio stream — the format used by Apple Music downloads, iPhone voice memos, and many podcasts) and re-encode it as 16-bit PCM WAV (CD quality). WAV is lossless and ideal for editing in a DAW, archival, or any pipeline that expects uncompressed audio. Note that AAC inside M4A is a lossy format, so the WAV will faithfully copy the decoded audio but won't recover information that was discarded during the original encode — you can't get true lossless from a lossy source. The conversion runs entirely in your browser via ffmpeg.wasm; nothing is uploaded.
Drop .m4a file here
or click to choose
Privacy
Runs entirely in your browser — nothing is sent to any server.
Cost
Free. No sign-up, no watermark.
Supports
.m4a → .wav
Related tools
Tools that work with the same formats — most users open one of these next.
M4A to MP3
Convert M4A audio (AAC in MP4) to MP3 — free online, no upload.
MP3 to WAV
Convert MP3 audio to uncompressed WAV — free online, no upload.
FLAC to WAV
Convert FLAC lossless audio to uncompressed WAV — free online, no upload.
OGG to WAV
Convert Ogg Vorbis audio to uncompressed WAV — free online, no upload.
AAC to WAV
Convert AAC audio (.aac, .m4a) to uncompressed WAV — free online, no upload.
WAV to MP3
Convert WAV audio to MP3 with selectable VBR quality — free online, no upload.
Frequently asked
Is M4A to WAV free to use?
Yes. M4A to WAV is completely free with no sign-up, no watermark, and no usage limits. Toolsly does not charge for any of its tools.
Do my files and data stay private?
Yes — M4A to WAV runs entirely in your browser using your device's CPU. Files and text are never uploaded to our servers, so your data stays private.
How does M4A to WAV work?
Open M4A to WAV, drop in your M4A file, choose any options, and click Convert. Your browser does the work locally and produces a WAV file you can save right away.
What's the maximum file size for M4A to WAV?
Because M4A to WAV runs in your browser, the maximum size depends on your device's available memory. Most modern phones and laptops handle files up to a few hundred MB without issues.