MP4 to WAV Converter

Extract uncompressed WAV audio from any MP4 video. Free, in your browser, with no signup, no file limits, and no watermark.

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Click or drag and drop to upload files

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

EchoWave is used by creators, marketers, educators, and businesses to convert and edit media online.

Updated June 2026

Pull the soundtrack out of an MP4 and save it as an uncompressed WAV, free and right in your browser. WAV stores raw PCM audio with no further compression, which is exactly what audio editors, transcription tools, and mastering software want. The trade-off is size: a WAV runs around 10 MB per minute, far larger than the MP3 or AAC track that was inside the MP4.

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 MP4 to WAV

1
Upload your MP4
Drag your MP4 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 you want, then start. Free, with no sign-up.
3
Download your WAV
Save the finished WAV to your device, or open it in the editor to trim or reuse it.

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

MP4 vs WAV

MP4

MPEG-4 Part 14

The video format that plays everywhere

Type: Video container
Holds: H.264 video plus AAC audio, sometimes subtitles
Typical size: Large, it carries video
Plays on: Phones, browsers, TVs, almost any player

Best for:Watching and sharing video

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?

The WAV can only be as good as the audio already inside your MP4.
A bitrate higher than the source does not add quality, it only makes a bigger file.
192 to 320 kbps keeps music clear. 128 kbps is fine for speech.

Use cases

What people use it for

PodcastersPublish a clean audio episode

Students & lecturesReplay recordings anywhere

MusiciansSave sets to listen offline

TranscriptionSend a small file, not a video

CommutersTalks and audiobooks on the go

Troubleshooting

If something looks off

The WAV has no sound

Some videos store audio as AC-3. The converter still handles it, but if a clip plays silent, re-download the source and convert again.

The file is too large to email

Convert at a lower bitrate, 128 kbps for talking, or trim the clip first to cut its length.

Which apps open WAV files?

Almost anything opens it: your browser, your phone, any music app, or VLC. No special player needed.

FAQ

MP4 to WAV questions

Is the MP4 to WAV converter free?

Yes. EchoWave converts MP4 to WAV with no signup, no file-count limit, no trial, and no watermark. Upload your video, convert it, and download the WAV from your browser.

How do I extract WAV audio from an MP4?

Upload your MP4, choose WAV as the output format, and start the conversion. When it finishes, download the WAV to your device, or open it in the editor to trim it first.

Will the WAV sound better than the MP4's audio?

No. WAV is uncompressed, but it cannot rebuild detail the MP4's AAC track already discarded. What WAV does well is stop any further quality loss, so the audio stays exactly as good as the source from here on, which is why editors prefer it for further work.

Why is the WAV file so much larger than the MP4?

WAV keeps raw PCM samples with no compression, so it runs about 10 MB per minute at CD quality. The MP4's audio was compressed to a fraction of that. The size is the price of an edit-ready, no-loss copy, so use WAV when quality matters and MP3 when you need a small file.

What sample rate should I use, 44.1 kHz or 48 kHz?

Use 44.1 kHz for music and CD-style projects, and 48 kHz for video and broadcast work since that is the standard for video audio. Going above the source rate does not add quality, so match what the MP4 already holds rather than resampling upward.

Can I open the WAV in Audacity or other audio editors?

Yes. WAV is the most widely accepted format in audio software, so it opens cleanly in Audacity, Audition, GarageBand, Pro Tools, and almost any editor. That universal support is the main reason to choose WAV over a compressed format for editing.

Is WAV a good choice for transcription?

Yes. Many transcription and speech tools accept WAV directly and prefer uncompressed audio because nothing has been thrown away. If your tool also takes MP3, a 128 kbps MP3 is far smaller for spoken word and usually transcribes just as well.

Does the MP4 to WAV converter work on Mac, Windows, iPhone, and Android?

Yes. It runs in any browser, so you can extract WAV from MP4 on macOS, Windows, Chromebook, Linux, iPhone, iPad, and Android with nothing to install and no account to create.

Can I convert several MP4 files to WAV?

There is no cap on how many MP4 clips you can run through, so work through them one at a time and download each WAV as it lands. Do bear in mind that uncompressed WAV grows at roughly 10 MB per minute, so a long video produces a sizeable file and a longer recording takes a bit more time to upload and process than a short one.