Convert MP4 to MP3

Extract audio from MP4, WebM, and MOV videos. Download as MP3 — no upload, no signup, no watermark.

Drop a video here

or click to select a file

MP4, WebM, MOV — up to 2 GB

The FFmpeg engine (~25 MB) downloads on first use and is cached by your browser. Audio is extracted entirely in-browser — nothing is uploaded.

How to use

  1. Drop a video file or click to select an MP4, WebM, or MOV.
  2. Choose the MP3 bitrate — 192 kbps is recommended for most uses.
  3. Click "Extract MP3" and download the audio file.

Frequently asked questions

Is this MP4 to MP3 converter free?

100% free, no signup, no watermark, no server upload. The entire conversion runs in your browser using WebAssembly — your video file never leaves your device.

What bitrate should I choose?

192 kbps is the sweet spot for most uses — it is indistinguishable from CD quality for voice and music. Choose 128 kbps for podcasts or voice recordings to keep the file smaller. Use 320 kbps only if you need the absolute highest quality for music production or archiving.

Can I extract audio from WebM and MOV too?

Yes. The tool accepts MP4, WebM, and MOV (QuickTime) video files. The output is always an MP3 file regardless of the input format.

What is the maximum file size?

Up to 2 GB on desktop. Mobile browsers may struggle above 500 MB because the video is loaded into browser memory for processing. Since nothing is uploaded, the limit is your device RAM, not a server quota.

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