conversions4 min read
MP4 to WAV: Extract Audio from Video Online, Free
Pull the audio track out of an MP4 video and save it as an uncompressed WAV file, entirely in your browser. No upload, no account, no watermark.
Convert MP4 to WAV
Extract the audio from your MP4 video and save it as WAV. Free, instant, private.
Drop your MP4 video here, or click to browse
Converts MP4 to WAV — .mp4 files only
✓Free forever
✓Runs locally
✓No account
✓No watermark
Why use PixelTools to convert mp4 to wav
Clean MP4 to WAV conversion
Converts a video container that carries an audio track alongside the picture into uncompressed, lossless PCM audio, using ffmpeg's native encoder so the output sounds exactly as intended.
100% private — no upload
Conversion runs entirely in your browser using WebAssembly. Your MP4 file is never sent to a server, stored, or seen by anyone but you.
No account, no watermark
Free to use with no sign-up, no file limits, and no watermark on your WAV output.
Why convert to WAV
opens in every audio editor and DAW without any decoding step
Works on any device
Fully responsive with touch-friendly controls — convert your MP4 file from your phone, tablet, or desktop without installing anything.
Safe for sensitive recordings
Because nothing leaves your device, this is safe to use on phone recordings, screen captures, and downloaded video files or any other recording you can't upload to a third-party server.
Three steps to convert mp4 to wav
- 1
Drop your MP4 video
Drag and drop your MP4 video onto the page, or click to browse. Nothing is uploaded — the file stays on your device.
- 2
Conversion runs in your browser
A WebAssembly build of ffmpeg decodes the MP4 audio track and re-encodes it as WAV entirely on your device. A progress bar shows the conversion as it runs.
- 3
Download your WAV file
Preview the result right on the page, then click Download to save the WAV file to your device.
Who converts MP4 to WAV?
Whether you're a podcaster, a musician, or just need one file in a different format — PixelTools converts MP4 to WAV instantly in your browser, with no upload and no account needed.
Working with phone recordings, screen captures, and downloaded video files
MP4 files typically come from phone recordings, screen captures, and downloaded video files. Converting to WAV makes them usable in the apps and platforms that actually need them.
Publishing or sharing as WAV
opens in every audio editor and DAW without any decoding step, which is exactly why people convert MP4 to WAV before sharing or uploading.
Editing and production workflows
Podcast editors, video producers, and musicians convert MP4 to WAV to match the format their DAW, NLE, or publishing platform expects.
Reducing file size for sharing
A WAV file is often far smaller and easier to email, message, or upload than the original MP4, especially when only the audio is needed.
Frequently asked questions
Is the MP4 to WAV converter free?
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Yes, completely free with no limits. Convert as many files as you want. No subscription, no account, no watermark.
Does this tool upload my video to a server?
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No. The conversion happens entirely in your browser using WebAssembly. Your MP4 video never leaves your device.
Why convert MP4 to WAV?
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MP4 is a video container that carries an audio track alongside the picture, typically from phone recordings, screen captures, and downloaded video files. Opens in every audio editor and DAW without any decoding step.
Will the audio quality change?
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Converting to WAV is lossless when the source is also lossless (like FLAC or another WAV) — every sample is preserved. Converting from a lossy source like MP3 to WAV changes the container but can't restore detail the original encoding already discarded.
Is there a file size limit?
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Files up to 2GB are supported. Very large files take longer to process since everything runs on your device's CPU rather than a server.
Can I use the converted WAV file commercially?
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PixelTools does not claim any rights over files you process. The output is yours to use however you like, subject to any rights the original file's owner holds.
Why extract to WAV instead of MP3 when pulling audio out of a video?
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If you're planning to edit the extracted audio further — cleaning up dialogue, layering it under a podcast intro, or remixing a music bed in a DAW — WAV avoids stacking a second round of lossy compression on top of whatever codec the MP4's audio track already used. MP3 is the better choice when you just want to listen to or share the result as-is.