MP4 to MP3

Convert video to MP3 online — free and private

Sometimes you only want the sound. A lecture you filmed, a song from a clip, a podcast recorded as video, an interview, a voice memo buried in a movie file — pulling the audio out as an MP3 makes it small, easy to play anywhere, and simple to keep on your phone. This tool does exactly that: you give it a video, it extracts the audio track and hands you an MP3. And it does the whole thing in your browser, so your video is never uploaded to a server.

That last part matters more than it sounds. Most "video to MP3" sites work by uploading your file to their servers, converting it there, and letting you download the result — which means your recording, whatever is in it, passes through someone else's machine. Here nothing leaves your device. The conversion runs locally, so a private recording stays private.

How it works

Upload your video and tap Extract MP3. On the first run, the tool loads a small audio encoder (about 31 MB) into your browser — a one-time download that's then cached, so later conversions start straight away. A progress bar shows how far along the extraction is. When it's done, you get an inline player to check the audio, and then you can share or download the MP3. Everything — reading the video, decoding it, and encoding the MP3 — happens on your own device.

Because the work is local, speed depends on the clip and your hardware. A short video converts in moments; a long one takes more time and memory. On a phone, very long recordings are heavier going than on a computer, so for a two-hour file a desktop is the smoother choice.

What goes in, and what you get out

It accepts the video formats people actually have: MP4, MOV (the format iPhones record in), WebM, MKV, AVI, M4V and more. Whatever the container, the tool finds the audio and re-encodes it to MP3 at a high quality of roughly 190 kbps — a good balance of clear sound and a sensible file size. The result is a standard MP3 that plays in any music app, on any phone or computer, with no special software.

The output is always MP3, which is the point: it's the most universally compatible audio format there is. Your resulting file is named after your video, so it's easy to find later.

Common uses

People pull MP3s out of video for all sorts of reasons: saving the audio of a lecture or webinar to listen to later, keeping the music from a performance you filmed, turning a video podcast into something you can play with the screen off, extracting a voice recording, or grabbing a sound clip to use elsewhere. Anytime the picture doesn't matter and only the sound does, an MP3 is smaller and far more convenient than carrying the whole video around.

Works on your phone

The tool is built to run in a phone's browser with nothing to install. Pick a video from your library, tap Extract MP3, and when it finishes, use Share to send the file to Files, Messages, WhatsApp, or any app that takes audio — or save it straight to your device. Sharing is the reliable way to keep a file on a phone, so it's the primary action on mobile, with a download option as a fallback.

Privacy: your video never leaves your device

Every step happens inside your browser — the video is read, decoded, and turned into an MP3 locally, and nothing is uploaded, stored on a server, or seen by anyone else. There's no account to create and nothing to delete afterwards, because the file was never sent anywhere in the first place. For personal recordings — a family event, a private meeting, a voice note — that's the difference between extracting some audio and handing your recording to an unknown server to do the same job.

Frequently asked questions

Which video formats can I convert?

MP4, MOV (iPhone video), WebM, MKV, AVI, M4V and more. The tool extracts the audio track and always gives you an MP3.

Why is the first conversion slower?

The audio encoder (about 31 MB) downloads once on your first conversion, then it's cached. After that, speed depends on the video's length and your device.

What quality is the MP3?

High quality — around 190 kbps (VBR). There's no separate quality slider; you get a clean, good-sized MP3 automatically.

Is my video uploaded to a server?

No. Everything runs in your browser — your video never leaves your device, and nothing is stored or sent anywhere.