Convert MP4 to WAV Online
Turn MP4 files into WAV directly in your browser using ConverterUp. There is no upload, no waiting in a queue, and no account required — your files stay on your device while WebAssembly does the work locally. Adjust quality and dimensions where supported, then download the result. The output keeps the visual fidelity you'd expect from a desktop app while running entirely in the browser tab.
Convert MP4 to WAV nowHow to convert MP4 to WAV
Open the converter
Click the button to open the MP4 to WAV tool. It loads instantly — no install, no signup.
Drop your MP4 file
Drag your MP4 file into the upload area or click to browse. The file stays in your browser memory only.
Download WAV
The conversion runs locally and finishes in seconds. Click download to save the WAV file to your device.
MP4 vs WAV at a glance
Key technical differences between the two formats, so you know what to expect before converting.
| Feature | MP4 | WAV |
|---|---|---|
| Type | Video container | Audio file |
| Compression | Lossy | Uncompressed (PCM) |
| Bit depth | — | 8–32 bit PCM |
| Audio track | Yes | Yes |
| Common codecs | H.264, H.265, AV1, AAC | — |
| Browser support | All browsers | All browsers |
| Extensions | .mp4 | .wav |
| MIME type | video/mp4 | audio/wav |
| Introduced | 2003 · MPEG (ISO/IEC 14496-14) | 1991 · Microsoft & IBM |
What changes when you convert MP4 to WAV
- WAV is audio only: the video track is discarded and only the soundtrack of the MP4 file is kept.
- The audio is written as uncompressed 16-bit PCM, so nothing is lost in the conversion itself.
- WAV is uncompressed, so expect roughly 10 MB per minute of stereo audio — often larger than the compressed video.
- WAV is the standard for audio editing — Audacity, Premiere, GarageBand and every DAW open it without conversion.
- Conversion can't improve the sound: the WAV file is at most as good as the audio inside the MP4 file.
About MP4
MP4 (MPEG-4 Part 14) is the most widely supported video container. It typically holds H.264 or H.265 video with AAC audio and plays on virtually every phone, browser, TV and editor.
- Best for
- Sharing videos, uploading to social networks and YouTube, and playback on any device.
- Strengths
- Universal playback, good compression, streaming-friendly.
- Limitations
- Lossy codecs, so repeated re-encoding gradually reduces quality.
About WAV
WAV (Waveform Audio File Format) is Microsoft and IBM's container for uncompressed PCM audio. It stores the waveform exactly, with no compression artifacts.
- Best for
- Audio editing, music production, voice-over recording and archiving.
- Strengths
- Lossless and uncompressed; opens in every editor and DAW.
- Limitations
- Very large files (about 10 MB per minute of stereo audio).
Frequently asked questions
Is the MP4 to WAV conversion really free?
Yes. ConverterUp is fully free, with no signup, no watermarks, and no daily quota for the MP4 to WAV converter. We support the project through unobtrusive ads.
Are my MP4 files uploaded to a server?
No. Conversion runs in your browser using WebAssembly. The MP4 bytes never leave your device, and we have no upload endpoint at all.
What is the maximum file size?
For MP4 input, the soft cap is 50 MB for images and 500 MB for video. Practical performance depends on your device's RAM.
Does converting MP4 to WAV lose audio quality?
No. WAV is uncompressed, so the extracted track keeps exactly the quality of the audio inside the MP4 file — no extra compression is added.
Can I convert MP4 to WAV from a YouTube or TikTok link?
No. ConverterUp converts files that are already on your device and never downloads from YouTube, TikTok or other sites. Save the video first (only content you have the rights to), then drop the file here.
Is there a file size limit for converting MP4 to WAV?
Videos up to 500 MB are supported. Everything runs in your browser, so large files depend on your device's memory, and nothing is uploaded or queued.
Related guide
How to Convert MP4 to GIF Free OnlineRelated conversions
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