Convert MP4 to WAV Online
Extract WAV audio from a MP4 video directly in your browser. Free, no signup, and your file is never uploaded.
Click to upload or drag a file here
Supported: MP4 · Processed entirely in your browser
Converted entirely in your browser using a WebAssembly build of FFmpeg — your file is never uploaded anywhere. Larger files take longer and use more memory.
MP4 to WAV extracts a video's audio into the uncompressed WAV format — the standard choice whenever the audio is headed for further editing, since WAV avoids the quality loss that compressed formats like MP3 introduce.
Why choose WAV instead of MP3 when extracting audio?
WAV stores audio uncompressed, preserving the full original quality with nothing discarded, while MP3 is a "lossy" compressed format that permanently throws away some audio detail to shrink the file size. That makes WAV the better starting point for further editing, mixing or processing, where every generation of lossy re-compression would otherwise compound quality loss — the tradeoff is a much larger file.
Will the audio quality actually be identical to the original video's audio?
Yes — extracting to WAV doesn't re-compress or discard anything, so the resulting audio is essentially the same quality as what was already stored in the source MP4, just repackaged into its own standalone file.
Is this private, and does the video get uploaded?
No — conversion happens entirely in your browser, so nothing is uploaded anywhere; it's also free, with no sign-up and no limit on how many files you convert.
Where did the WAV format actually come from?
It's nearly as old as Windows multimedia itself: Microsoft and IBM jointly developed WAV in August 1991 as part of a broader specification called RIFF (Resource Interchange File Format), built to standardize Windows 3.1 multimedia files at a time when practically every hardware maker and software company had its own competing, incompatible audio format. RIFF itself borrowed its basic "chunk"-based structure from an even older format, Electronic Arts' Interchange File Format, created for the Amiga back in 1985 — meaning the uncompressed audio format still considered the professional standard today traces its actual file structure back to 1980s home computer software.
Is MP4 to WAV free to use?
Yes. MP4 to WAV is completely free, with no sign-up and no usage limits.
Do I need to install any software?
No. MP4 to WAV runs directly in your web browser — nothing to download or install.
Is my data kept private?
Everything happens on your device. We never receive or store the file or text you enter into MP4 to WAV.