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Video to MP3 Converter

MP4 · MOV · AVI · WEBM · MKV → MP3 · 320 / 192 / 128 kbps · WebAssembly + Web Workers, running entirely on your device.

No Sign-Up Required100% Free — Private On-Device Processing

Drop your video here

or browse your device · MP4, MOV, AVI, WEBM, MKV

MP3 quality

Drop a video to begin.

How the conversion works

  1. Drop a video

    MP4, MOV, AVI, WEBM, MKV or any common audio container.

  2. Pick a bitrate

    320 kbps, 192 kbps or 128 kbps — switched instantly, no re-upload.

  3. Download the MP3

    Encoded on-device by FFmpeg in WebAssembly, saved straight from memory.

Supported input formats

Every container below is demuxed locally, its audio track extracted and re-encoded to MP3 — without a single byte leaving the browser.

  • MP4
  • MOV
  • AVI
  • WEBM
  • MKV
  • M4V
  • MPEG
  • FLV
  • WMV
  • WAV
  • M4A
  • OGG
  • FLAC
  • AAC

MP3 quality levels

320 kbps
Maximum fidelity
Music, DJ sets, archival copies
192 kbps
Balanced default
General listening, mixed libraries
128 kbps
Compact output
Podcasts, lectures, voice notes

Frequently asked questions

How do I convert a video to MP3?

Drag an MP4, MOV, AVI, WEBM or MKV file onto the uploader above, pick a bitrate (320, 192 or 128 kbps) and press Convert. The MP3 is encoded locally on your device and the download starts immediately — there is no upload step and no waiting queue.

Are my video files uploaded to a server?

No. videotomp3.io performs 0% server upload. The converter runs FFmpeg compiled to WebAssembly inside a Web Worker in your browser, so the audio track is decoded and re-encoded entirely on your device. Your media never touches our infrastructure and nothing is stored or logged.

Which video and audio formats are supported?

Input: MP4, MOV, AVI, WEBM, MKV, M4V, MPEG, FLV, WMV, plus audio-only WAV, M4A, OGG, FLAC and AAC. Output: MP3 at 320 kbps, 192 kbps or 128 kbps constant bitrate, 44.1 kHz stereo.

What MP3 bitrate should I choose?

Use 320 kbps for music and archiving where fidelity matters, 192 kbps as the balanced default for general listening, and 128 kbps for speech, lectures and podcasts where a smaller file is preferable. All three levels are available on every conversion.

Does the converter work on mobile phones and tablets?

Yes. The uploader works in Safari 15+ on iOS and Chrome, Edge, Firefox and Samsung Internet on Android. Conversion speed depends on your device chip rather than on a server, so modern phones handle a typical music video in a few seconds.

Is there a file size or length limit?

There is no artificial limit imposed by the tool. The practical ceiling is your device memory — desktop browsers comfortably process files up to roughly 2 GB or two hours, while mobile devices handle shorter clips more smoothly.

Do I need to install software or create an account?

No installation, no sign-up, no email and no watermark. Open the page, drop a file and download the MP3. After the first visit the WebAssembly engine is cached, so subsequent conversions start instantly and can even run offline.

Your files never leave your device

No upload, no storage, no tracking of file contents. The conversion engine is downloaded once, cached by your browser and executed in a sandboxed Web Worker.