Convert M4A to WAV Free
Convert M4A to WAV free — turn an iPhone recording or Apple audio file into uncompressed audio that every editor, DAW, and transcription tool accepts. No signup, no upload.
Drop your M4A file here or click to browse
M4A (.m4a) · Max 20 MB
The reason this conversion exists is that M4A and editing software do not get along. M4A holds AAC audio in an Apple container, and while it plays fine, plenty of DAWs, samplers, video editors, and transcription tools either refuse it outright or import it with wrong durations and timing quirks. WAV — uncompressed PCM — is the format all of them accept without argument.
Say the honest thing first: converting M4A to WAV does not improve the sound. AAC is lossy, and what its encoder discarded is gone permanently. Decompressing it into WAV produces a much larger file containing exactly the same audio. Nobody can give you back detail that was never stored.
What it does buy you is a loss-free chain from here on. If you edit the M4A directly, many tools decode it and then re-encode on export, so your finished file carries the original AAC loss plus a second generation. Decode once to WAV and the existing loss is frozen: every cut, EQ move, noise reduction pass, and export afterwards works on raw samples and adds nothing further.
Expect roughly 10 MB per stereo minute. An iPhone voice memo that was 5 MB becomes maybe 50 MB as WAV — irrelevant for a working file, and the reason you keep the M4A for storage and use the WAV for the session.
Free means free: no account, no watermark, no queue. And nothing is uploaded — the decode runs in your browser with WebAssembly, which matters because M4A files are so often private voice memos, interviews, and meeting recordings. Free covers inputs up to 20 MB with a 10-second preview; Pro handles full-length files up to 500 MB.
Frequently Asked Questions
Does converting M4A to WAV improve the audio quality?
No. M4A contains lossy AAC audio and the discarded detail is unrecoverable — the WAV is the same sound, uncompressed and about 10× larger. You convert for compatibility and for a loss-free editing chain, not for quality.
Why won't my editor open M4A files properly?
Many DAWs, samplers, and transcription tools either refuse M4A or import it with wrong durations and timing quirks. WAV is uncompressed PCM — the format every one of them accepts without complaint.
Should I convert before editing, or just edit the M4A?
Convert first. Editing the M4A directly often means your tool decodes it and re-encodes on export, giving you two lossy generations. Decoding once to WAV freezes the existing loss and keeps everything after it clean.
How much bigger will the WAV be?
Around 10 MB per stereo minute — a 5 MB voice memo becomes roughly 50 MB. That's irrelevant for a working file; keep the M4A for storage.
Is my recording uploaded anywhere?
No. The decode runs entirely in your browser, so voice memos, interviews, and meeting recordings never leave your device.
About M4A
Apple's preferred audio format. Better quality than MP3 at same bitrate. Default for iTunes and Apple devices.
About WAV
Uncompressed audio format. Perfect quality with no data loss. Standard for music production and professional audio work.