MP4 – MPEG-4 Part 14
MP4 (MPEG-4 Part 14) is a widely used video format supported by this browser-based converter.
MP4 to WAV Converter
Choose an MP4 video file to convert to a WAV file. Works completely in your browser. Free and no ads.
Select a file to convert
Drop your MP4 file here or choose one from your device
Private and Secure: Files never leave your device. Media conversion runs entirely in your browser.
Quick guide
About MP4 to WAV conversion
WAV – Waveform Audio File Format
WAV (Waveform Audio File Format) is a widely used audio format supported by this browser-based converter.
Quick guide
How to Convert MP4 to WAV
- 01
Choose your MP4 file
Select or drag your MP4 file from your device into the converter.
- 02
Convert to WAV
Choose WAV as the output format, then start the local browser conversion.
- 03
Download your WAV file
Save the finished WAV file to your device.
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Frequently asked questions
Is Whisper Web really free? Do I need an account?
In free local mode, audio is processed in your browser and is not uploaded. No account is required. Each file can be up to 20 minutes and 200 MB. There is no daily file-count limit. For longer files, Whisper Web Unlimited offers optional cloud processing with a per-file limit of 10 hours and 5 GB.
What is the official Whisper Web site?
The official Whisper Web site is https://whisperweb.dev. Other domains may use a similar name. Free local mode on whisperweb.dev runs in your browser without an account; each file is limited to 20 minutes and 200 MB.
Does my audio leave my device?
In free local mode, audio is processed in your browser and is not uploaded. Model files still download over the network the first time you use a model. Whisper Web Unlimited is an optional cloud workflow for larger files (up to 10 hours and 5 GB per file).
What if a result says Whisper Web but the address is different?
If a result says “Whisper Web” but the address is not whisperweb.dev, it is not the official Whisper Web site. Open https://whisperweb.dev to use free local transcription in your browser (20 minutes / 200 MB per file, no account).
How do I convert MP4 to WAV?
Choose your MP4 file, select WAV, and click Convert. When processing finishes, download the converted file.
Is this MP4 to WAV converter free?
Yes. This converter is free to use, with no account, subscription, or ads.
Are my MP4 files uploaded?
No. Conversion runs locally in your browser, so your media file stays on your device.
What happens when converting MP4 to WAV?
The converter extracts only the audio track and saves it in WAV format; no video is retained.
Which browsers and devices support MP4 to WAV conversion?
The converter works in current desktop browsers on Windows, macOS, Linux, and ChromeOS. Performance depends on file size and device hardware.