Video to Audio — Free MP4 to MP3 Extractor Online, No Upload
Extract the audio track from any video — MP4, MOV, MKV, WebM and more — and save it as MP3, AAC, OGG, OPUS, FLAC, or WAV. Runs entirely in your browser, no upload.
Your computer does 100% of the processing — not a server, not the cloud.
FFmpeg runs directly inside your browser via WebAssembly. Your video files never leave your device. No upload, no cloud service — your own CPU pulls out the audio.
- ✓Files stay on your computer — zero upload, zero cloud
- ✓Completely private — no account, no logging of your files
- ⚠First use downloads ~32 MB FFmpeg engine — cached after that
Drop a video file here or browse files
MP4 · MOV · MKV · WebM · AVI · WMV · FLV · M4V · and more
The video track is discarded — you get the audio only
Free Online Video to Audio Extractor — 100% Local, No Upload
This tool uses FFmpeg compiled to WebAssembly, running entirely in your browser. It strips the video track and re-encodes the audio stream to the format you choose. Your video files never leave your device.
How it works
Drop an MP4, MOV, MKV, WebM, or AVI file, pick MP3 (or any other audio format), and download the extracted audio. Use the Batch tab to pull audio from many videos at once.
Related: Audio Compressor to reduce the extracted audio file size, or Audio Converter to convert between audio formats.
Frequently Asked Questions
Is Video to Audio free?
Yes — completely free. No account, no subscription, no watermark, and no file size limit beyond your device memory.
Is my video uploaded to a server?
No. Extraction runs entirely in your browser using FFmpeg compiled to WebAssembly. Your video never leaves your device and nothing is sent to a server.
Do I need an account?
No account, no login, and no signup required.
What audio formats can I save to?
MP3, AAC, OGG, OPUS, FLAC, and WAV. MP3 is the most universally compatible; FLAC and WAV are lossless for the highest quality.
How do I convert MP4 to MP3?
Drop your MP4 file, select MP3 as the output format, and click Extract. The audio track is stripped from the video and exported as an MP3 file in your browser — no upload required.
Why does it download ~32 MB the first time?
That is the FFmpeg WebAssembly engine. It downloads once, then your browser caches it so future extractions start immediately with no additional download.