Convert MP4 to WAV Online Free
Drag & drop your .mp4 file here, or click to browse
Converts to WAV on secure servers · first daily conversion free · no signup
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Extract the audio from your MP4 video as a lossless WAV file. Ideal for professional audio editing, mixing, or archiving where uncompressed quality matters.
By ChangeThisFile Team · Last updated: March 2026
ChangeThisFile extracts the audio from your MP4 video and saves it as uncompressed WAV using FFmpeg on our servers. WAV preserves full audio fidelity without any lossy compression, ideal for editing or mastering. Encrypted transfer with automatic file deletion, free and no signup required.
MP4 vs WAV: Format Comparison
Key differences between the two formats
| Feature | MP4 | WAV |
|---|---|---|
| Type | Video + audio container | Uncompressed audio format |
| Compression | Lossy (H.264 + AAC) | No compression (PCM) |
| File size | Compressed, medium to large | Very large (uncompressed) |
| Audio quality | High (AAC at ~128–256 kbps) | Lossless, bit-perfect audio |
| DAW support | Limited import support | Universal DAW and audio editor support |
| Use case | Video streaming and sharing | Studio recording, audio editing, mastering |
| Metadata | Title, chapters, subtitles | RIFF chunks, basic metadata |
When to Convert
Common scenarios where this conversion is useful
Audio production and mixing
Import audio into DAWs like Pro Tools, Logic Pro, or Audacity. WAV is the standard format for audio editing software, offering full quality without re-encoding artifacts.
Game audio and sound effects
Game engines like Unity and Unreal Engine work best with WAV files for sound effects and music. Convert MP4 recordings of sounds or music to WAV for game asset pipelines.
Archiving original audio tracks
Store the audio track from important video files in lossless WAV format for long-term archival. WAV ensures no further quality degradation when re-edited in the future.
Voice-over extraction for video editing
Extract narration or voice-over audio from recorded MP4 sessions to WAV for cleanup, editing, and re-import into video editing software like Premiere or DaVinci Resolve.
Music production from video recordings
Convert live performance videos recorded in MP4 to WAV to import into music production software for post-processing, mastering, and distribution.
Who Uses This Conversion
Tailored guidance for different workflows
Podcasters
- Pull the audio from a recorded MP4 interview or webinar and publish it as a WAV episode
- Convert a MP4 livestream recording to WAV so listeners can catch up on the go
Musicians & Producers
- Extract a performance take from a MP4 video into WAV to edit in your DAW
- Rip reference audio from a MP4 clip to WAV for sampling or transcription
Content Creators
- Convert a MP4 recording to WAV to reuse the soundtrack as background audio or a voiceover
- Turn a MP4 talk into a WAV audiogram or clip for social platforms
How to Convert MP4 to WAV
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1
Upload your MP4 file
Drag and drop your .mp4 file onto the converter, or click to browse. The free tier accepts files up to 25MB; eligible paid browser access accepts up to 100MB.
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2
Server-side audio extraction
Your file is securely uploaded and processed using FFmpeg. The audio track is extracted and decoded to uncompressed PCM WAV format. Processing typically takes a few seconds.
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3
Download the result
Click Download to save your converted .wav file. The original MP4 and converted WAV are automatically deleted from our servers.
Developers: convert via API →
Frequently Asked Questions
WAV stores audio in uncompressed PCM format, but the MP4 audio (typically AAC) was already lossy. The WAV output is an exact copy of the decoded AAC audio — no further quality is lost, but original AAC compression artifacts are preserved.
WAV stores uncompressed audio. A 1-minute stereo WAV at 44.1 kHz / 16-bit is about 10MB. This is normal — WAV prioritizes quality over file size.
The WAV output matches the sample rate of the audio in the MP4, typically 44.1 kHz or 48 kHz. No resampling is applied unless explicitly needed.
Yes. Files are transferred over HTTPS encryption and automatically deleted from our servers immediately after conversion. We never store or share your files.
Yes. WAV (PCM) is the most universally supported audio format for DAWs including Pro Tools, Logic Pro, Ableton Live, FL Studio, Audacity, GarageBand, and Reaper.
FFmpeg extracts the default audio track. If the MP4 contains 5.1 or 7.1 surround audio, it will be extracted as a multi-channel WAV file preserving all channels.
Most files convert in seconds. Longer MP4 files (over 1 hour) may take up to a minute depending on server load and the duration of the audio.
Yes, files up to 100MB can be uploaded with eligible paid browser access. If your file is larger, consider splitting it or compressing the video before uploading.
Yes, completely free. No account, no subscription, no limits on the number of conversions per day.
Yes. The converter works in mobile browsers on iOS and Android. You can upload from your photo library and download the WAV file to your device.
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Need to convert programmatically?
Use the ChangeThisFile API to convert MP4 to WAV in your app or script. Free tier included.
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