M4A to WAV Converter

Turn compressed Apple M4A audio into an uncompressed WAV file ready for editing. Free, in your browser, with no signup and no watermark.

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We support most file types including: MP4, MOV, WEBM, AVI, MP3, WAV, PNG, JPEG, GIF, MKV, PDF, FLAC, TIFF!

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Updated June 2026

M4A is the compact AAC audio Apple uses for Music and iPhone Voice Memos, while WAV is uncompressed PCM that audio editors and samplers prefer to work with. EchoWave converts M4A to WAV in your browser, free and with no signup, so you can drop the file straight into a DAW, a sampler, or a transcription tool. WAV files are far larger because nothing is squeezed out, but they open cleanly in any audio editor.

Free, no sign-upNo account, no trial

Runs in your browserNothing to install

Works on every devicePhone, tablet, laptop

No watermarkClean output, every time

How it works

How to convert M4A to WAV

1
Upload your M4A
Drag your M4A onto the converter or pick it from your device. Nothing to install.
2
Choose WAV and convert
Select WAV as the output, set the bitrate if it applies, then start. Free, with no sign-up.
3
Download your WAV
Save the finished WAV, or open it in the editor to trim or adjust it first.

Try it

Estimate your WAV

Pick a quality and a length to see the WAV file size before you convert.

Quality

Length10 min

1 min60 min

Estimated WAV size103MBCD, 16-bit stereo

WAV is uncompressed, so the size depends only on the quality and length you pick.

The formats

M4A vs WAV

M4A

MPEG-4 Audio

Apple-friendly AAC audio

Type: Lossy audio, usually AAC
Holds: AAC audio in an MP4 container
Typical size: Small, smaller than MP3 at the same quality
Plays on: iPhone, Mac, iTunes, and most players

Best for:Apple devices and clean compressed audio

WAV

Waveform Audio File Format

Uncompressed studio-quality audio

Type: Uncompressed audio
Holds: Raw PCM audio, no compression
Typical size: Very large, about 10 MB per minute
Plays on: Every device and audio editor

Best for:Editing and mastering at full quality

Will it lose quality?

Converting a lossy file to a lossless one cannot restore detail that was already discarded. It only makes a larger file.
Going from a high-quality source to WAV keeps the sound clear while changing the format.
Each pass between two lossy formats loses a little, so always convert from the best source you have.

Use cases

What people use it for

Music librariesStandardise your collection

ListenersUse a format your player likes

PodcastersMatch your host requirements

EditorsImport audio your tool accepts

DevicesPlay on phones and car stereos

Troubleshooting

If something looks off

The WAV is larger than I expected

Lossless and uncompressed formats are big by design. If you want a smaller file, pick a lossy format and a bitrate around 192 to 256 kbps.

The song details are missing

Title, artist, and album travel as tags when the source has them. If they are blank, add them in any music app after converting.

My app will not open the WAV

Most apps open common audio, but a few are picky. VLC plays almost anything, or convert to MP3 for the widest support.

FAQ

M4A to WAV questions

Is the M4A to WAV converter free?

Yes. EchoWave converts M4A to WAV with no signup, no file-count limit, no trial, and no watermark. Upload your M4A, convert it, and download the WAV from your browser.

Does converting M4A to WAV improve the audio quality?

No. M4A is usually lossy AAC, and saving it as WAV cannot rebuild detail that the AAC encoder already discarded. WAV is useful because it is uncompressed and edits cleanly, not because it restores anything. The WAV is only ever as good as the M4A you started with.

Why is the WAV file so much bigger than the M4A?

WAV stores raw PCM audio with no compression, so it runs around 10 MB per minute at CD quality, while a compressed M4A might be a tenth of that. The larger size is the trade-off for an uncompressed file that editors handle without re-decoding.

Why convert M4A to WAV?

WAV is the standard for editing, mastering, sampling, and importing into a DAW, since uncompressed audio avoids stacking another round of lossy compression while you work. It is also handy for tools and hardware that only accept WAV. Open the result in the editor to trim it first if you like.

Can I convert M4A to WAV on iPhone, Mac, Android, and Windows?

Yes. The converter runs in any browser on iPhone, iPad, Android, macOS, Windows, Chromebook, and Linux. Save the M4A from Voice Memos or Files, upload it, pick WAV, and download, with nothing to install.

Does the WAV keep the song title and artist from the M4A?

WAV has limited tag support compared with M4A, so some players show fewer details. The audio itself converts in full, and you can add or fix titles in your music app or editor afterward.

Can I convert long recordings or several files?

Yes. There are no file-count limits, so you can convert recordings one after another. Because WAV is uncompressed, long files become large quickly, so allow extra time to download a lengthy recording.

What opens the WAV after I convert from M4A?

Almost every device and audio editor opens WAV, including Audacity, GarageBand, Premiere, your phone, and VLC. It is one of the most widely supported audio formats, especially for editing work.

Should I use WAV or FLAC instead?

Choose WAV when a tool or workflow specifically wants uncompressed PCM. If you only want a lossless copy to store, FLAC holds the same quality at roughly half the size, so it is the better choice for archiving.