Convert MP4 to WAV
Convert MP4 files to WAV entirely in your browser — no upload, no account, no watermark.
Your file never leaves your device — conversion runs entirely in this browser tab.
To convert MP4 to WAV, open the WAV converter and drop your MP4 file in. The conversion runs entirely inside your browser using WebAssembly, so the file is never uploaded. Used when audio from a video is heading into an editor or a transcription engine, both of which prefer uncompressed input.
What to expect from this conversion
Used when audio from a video is heading into an editor or a transcription engine, both of which prefer uncompressed input. It will not recover anything the video’s AAC track already discarded — but it adds no further loss.
The universal container, normally holding H.264 and AAC. Plays essentially everywhere.
Lossy · video
Uncompressed PCM audio. No quality loss, but roughly ten times the size of an MP3.
Lossless · audio
How to do it
- Open the WAV converter
Go to the WAV converter and drop your MP4 file onto it, or click to browse.
- Convert
Press Convert. FFmpeg runs in your browser and shows real progress as it works.
- Download
Download the finished WAV file. It is created in your browser and never sent anywhere.
Common questions
How do I convert MP4 to WAV?
Open the WAV converter, drop your MP4 file onto it and press Convert. Everything runs in your browser — the file is not uploaded. Desktop browsers handle files up to about 200MB; mobile browsers about 40MB.
Does converting MP4 to WAV lose quality?
Not on the encoding side. WAV does not discard data when written, so nothing further is lost — though anything the MP4 source already discarded stays gone.
Is it free to convert MP4 to WAV?
Yes, with no account, no watermark and no daily limit. The processing happens on your device rather than on a server, so there are no per-conversion costs to pass on.
Are my files uploaded when converting MP4 to WAV?
No. FFmpeg runs as WebAssembly inside your browser tab. The file is read from your disk, processed in memory and written back out — it never reaches a server.