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MP4 to WAV Converter

Convert your MP4 files to WAV format. Private — converted on your device.

Processed on your device — files never leave your machine

Drop your MP4 file here or click to browse

Converted on your device — files never uploaded

How to Convert MP4 to WAV

  1. 1 Upload your MP4 file
  2. 2 Converted on your device — files never uploaded
  3. 3 Download your WAV file

MP4 to WAV: a video's audio, ready to edit

Taking the audio of an MP4 out as WAV is the usual first step when that sound needs work: cleaning up dialogue, cutting a sample, lining up a second recording, or bringing a performance into a DAW or audio editor that does not open video files.

The sound track is decoded on your device and written as PCM WAV; the picture is dropped. An AAC track, the usual kind, becomes 16-bit WAV with a low-level dither, and a 24-bit lossless track stays at 24 bits. Because WAV stores samples uncompressed, editing and exporting it again adds no new compression loss. It cannot undo the compression the MP4 already applied: a WAV made from a 128 kbps AAC track holds what that track decodes to, in a much larger file.

Mono stays mono, and the WAV writer never folds surround down to stereo. Sizes grow fast: 16-bit stereo at 48 kHz takes about 11.5 MB per minute. Each input may run up to 30 minutes if your device has the memory to hold it decoded; a phone or tablet holds less. The WAV holds only audio, with no tags.

Frequently Asked Questions

Is MP4 or WAV better quality?
WAV is a lossless format while MP4 is lossy. Converting to WAV adds no further compression loss, but cannot recover quality lost during the original MP4 compression.
Will I lose quality converting MP4 to WAV?
No further compression loss — the WAV file holds the decoded audio of your MP4 as PCM: 16-bit for a lossy or 16-bit source and 24-bit for a deeper one, with a low-level dither.
How long does conversion take?
Seconds for most files. Conversion runs entirely on your device — no upload wait, no server queue. Files up to 30 minutes long are supported.
Is the WAV better quality than the audio inside the MP4?
No. It is the same decoded sound stored without compression. That avoids a second lossy encode when you edit and export, but it cannot restore detail the MP4's encoder removed.
Does a 5.1 soundtrack stay 5.1?
The WAV writer keeps every channel it receives, in order, so six decoded channels give a six-channel WAV. For a stereo file instead, convert with MP4 to MP3, which folds surround to two channels.
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