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MP4→MP3

Convert MP4 to MP3

Extract audio from any video — right in your browser, nothing uploaded.

Drop a file here, or browse

Max 500 MB · .mp4 · .mov · .webm · .m4v

  • Private
    Nothing uploaded
  • Instant
    No queue, no wait
  • Unlimited
    No daily caps
  • No signup
    Zero friction

The process

How to convert MP4 to MP3

  1. 01
    Drop a video

    Add a .mp4, .mov, .m4v or .webm file.

  2. 02
    Extract audio

    FFmpeg runs in your browser, extracts the audio track and encodes it as MP3.

  3. 03
    Download MP3

    Your audio file downloads instantly — ready for your podcast player, DAW or phone.

The format

About MP4 and MP3

Separating audio from video is one of those tasks that absolutely should run on your own device: videos are large, uploading them wastes time and bandwidth, and online converters often queue your file behind thousands of others. We use FFmpeg compiled to WebAssembly, so the exact same converter the pros use runs directly in your browser — no server round-trip, no queue, no quota. Default output is a 128 kbps MP3, which is indistinguishable from the source for speech content and more than enough for most music. We accept MP4, MOV, M4V and WebM; the audio track is extracted cleanly and no video data touches our servers because there is no server.

In the wild

What people use this for

  • 01Turn a YouTube-downloaded MP4 into an MP3 for your podcast app
  • 02Extract audio from a lecture recording to listen on commute
  • 03Pull a music track out of a video clip for use in another project
  • 04Get the voiceover from a tutorial as an audio file

The questions

Frequently asked

What audio quality do I get?

128 kbps MP3 by default — excellent for podcasts, lectures and music demos. Higher bitrate (320 kbps) is a Pro feature.

Why doesn't this upload my file?

We use FFmpeg compiled to WebAssembly, which runs the whole conversion inside your browser. Big video files no longer have to be uploaded, which is faster and more private.

Can I convert other video formats?

Yes. MP4, MOV, M4V and WebM all work — the audio track is extracted and encoded as MP3.

How large a video can I convert?

Up to 500 MB in Phase 0. Larger files are supported in our upcoming Pro tier.

Does this work on mobile?

Yes on iOS 16+ and recent Android. Large files on phones may be slow due to lower RAM.

Is anything uploaded or logged?

Nothing. Your video is processed entirely locally — we have no server to log it to.

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