Free online tool
Extract Audio from Video
Convert MP4, MOV, AVI, MKV or WebM to MP3, WAV or AAC — instantly, in your browser.
Drag & drop video files here
MP4 · MOV · AVI · MKV · WebM · multiple files OK
Audio sounds damaged or noisy?
Professional restoration by real engineers — noise removal, voice clarity, echo reduction.
Why use this tool?
100% private
Your file never leaves your device. All processing happens locally in your browser via WebAssembly.
Fast extraction
Powered by ffmpeg.wasm — the same engine used by professionals, running at near-native speed.
3 output formats
Choose MP3 for compatibility, WAV for lossless quality, or AAC for small file size.
Multiple files at once
Drag in as many videos as you need and convert them all in one go.
No file size limit
No server means no upload cap. Files up to several GB work fine on modern hardware.
Completely free
No account, no registration, no email. Just open the page and start converting.
How to extract audio from a video
- 1
Upload your video
Drag and drop or click to select an MP4, MOV, AVI, MKV, or WebM file. The file stays on your device.
- 2
Choose output format
Select MP3 for broad compatibility, WAV for full lossless quality, or AAC for efficient streaming.
- 3
Click Convert
Hit the Convert button. The audio engine prepares in the background while you add files — no waiting. Processing happens locally on your device.
- 4
Download
Download files one by one or all at once with a single click. No registration, no email, no waiting for a server.
Professional audio restoration
Extracted audio sounds noisy or unclear?
Background hiss, hum, muffled speech, echo — these are fixable. WefixSound engineers professionally restore audio from interviews, films, podcasts, and archives. You only pay after approving a free sample.
Frequently asked questions
How do I extract audio from a video file online?
Drop or upload your video file (MP4, MOV, AVI, MKV or WebM) into the tool above, choose your output format (MP3, WAV or AAC), and click 'Extract Audio'. The audio is extracted in your browser — nothing is uploaded to any server.
Is my video file uploaded to your server?
No. The tool runs entirely in your browser using WebAssembly (ffmpeg.wasm). Your video file never leaves your device.
What video formats are supported?
The tool supports MP4, MOV (QuickTime), AVI, MKV (Matroska), and WebM files.
What audio formats can I export to?
You can export the extracted audio as MP3 (most compatible), WAV (lossless, best for editing), or AAC (small file size, good quality).
Is there a file size limit?
There is no server-side limit since processing happens locally. Practical limits depend on your device's RAM — files up to 2 GB work on most modern computers.
The extracted audio has background noise or poor quality. What can I do?
If the original recording has noise, hiss, hum, or unclear speech, our audio restoration service at WefixSound can professionally clean it up. Our engineers handle noise removal, voice clarity enhancement, and more.