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Convertube

WebM to MP3 converter

Extract audio from a WebM file as MP3, in your browser with no upload. The usual way to get the sound out of a browser recording or a web download.

Runs on your deviceFree, unlimited

Drop files here

or

Accepts .webm · Up to 20 files at a time · up to 2.0 GB each "Upload" and "download" here mean your browser reading a file from this device and writing one back to it. Your file is never sent to a server — open your browser's network panel and watch: no request carries your file.

WebM to MP3 FAQ

Is MP3 worse than the Opus inside my WebM?

At the same bitrate, yes — Opus is a much newer codec and holds detail better. Use 192 kbps or above if the content is music. For speech, the difference is not worth worrying about.

Why not just keep the WebM?

Keep it if everything you use plays it. Convert when a device, editor or upload form will not — car stereos, older players and a lot of audio software still expect MP3 and nothing else.

Does it work on audio-only WebM?

Yes. Browser voice recorders often produce a WebM with no video track at all; that converts the same way and slightly faster.

What bitrate for a screen recording or meeting?

128 kbps is ample for speech and halves the file compared with the default. Reserve 192 kbps and above for music or anything you plan to edit.

How long does it take?

Seconds. The video is skipped rather than decoded, so the work is proportional to the audio length, not the file size.

Is anything uploaded?

No. The extraction runs inside this page — relevant for meeting recordings, which are exactly the kind of file you would not want to send to a stranger's server.

Is it really free?

Yes — every conversion on this site, with no account, no watermark and no daily cap. The work happens on your own device, so there is no server bill for us to pass on to you.

Do I need to install anything?

No. It runs in any modern browser, on Windows, macOS, Linux, Android and iOS. There is nothing to install and nothing to sign up for, and once you have converted a file on the page it keeps working with the network switched off.

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