MP4 to WAV converter

Editors, DAWs, transcription tools and samplers want uncompressed WAV.

Drop a MP4 file hereThe converter loads in your browser.

What happens to your MP4

Audio is decoded to 16-bit PCM at the original sample rate. Nothing is compressed, so the file is large but loses nothing further.

Tip: WAV uses about 10 MB per stereo minute at 44.1 kHz, so an hour-long video gives a ~600 MB file.

How to convert MP4 to WAV

  1. Drop your MP4 file on the box above, or tap it to pick one. The engine (about 31 MB) loads once per visit.
  2. The converter reads the file's streams and shows which codecs are inside.
  3. Pick a bitrate, or leave the default to keep the original audio when possible.
  4. Press the button, wait for the progress bar, then download your WAV.

Prefer the command line?

This is the FFmpeg command the converter runs for a typical MP4 (h264 + aac). Paste it into a terminal with FFmpeg installed for batch jobs or files too big for a browser tab:

ffmpeg -y -i input.mp4 -vn -sn -c:a pcm_s16le output.wav

This re-encodes, so expect it to take a while on long files. Your own file may contain different codecs; the converter above detects them and adapts. For other jobs, ask the FFmpeg command helper.

Questions

Does WAV improve quality?

No. It stores the decoded audio exactly; it cannot restore detail the original AAC removed.

Is my MP4 file uploaded?

No. The MP4 is read from your device by FFmpeg running as WebAssembly in the page, and the WAV is written back to your device. No server ever receives it.

Is there a size limit for MP4 to WAV?

We set none. The practical limit is browser memory: roughly 2 GB of output on a computer, and much less on phones.