Free MP4 to MP3 converter

Why convert MP4 to MP3?

Sometimes only the audio matters — a lecture, a podcast recording, an interview or a piece of music from a video.

How to convert MP4 to MP3

1. Choose your MP4 file. Drop it on the box above, or tap to browse. You can pick several files at once.
2. Confirm the target is .mp3. It is preselected when your browser can encode it; otherwise the closest available target is chosen. Adjust quality, size or the other options if you want to.
3. Convert and download. Press Convert, then Download. Your file stays on your device the whole time.

What is a .mp4 file?

MP4 carrying H.264 video and AAC audio is the one video format that plays essentially everywhere — phones, televisions, browsers, editing software and every messaging app. When something refuses to play a video, converting it to MP4 is almost always the fix.

What is a .mp3 file?

MP3 is the audio format everything understands — every phone, car stereo, browser and media player made this century. It is lossy, but at 192 kbps or above most listeners cannot tell it from the original, and its universality outweighs the newer formats' efficiency.

What to expect from this conversion

The picture track is discarded and only the sound is kept, encoded at the bitrate you choose.

Is it private?

Yes, by design. Every conversion happens inside your own browser using your device’s processor — there is no server that receives your MP4 file, so there is nothing for anyone to store, scan or leak. You can confirm it yourself: open your browser’s developer tools, watch the Network tab while you convert, and you will see no upload.

Questions about MP4 to MP3

Is this MP4 to MP3 converter free?

Yes, completely. There is no account, no daily limit, no watermark and no premium tier.

Is my MP4 file uploaded to a server?

No. The conversion runs inside your own browser using your device's processor. The file is read from your disk, converted in memory and saved back to your disk — nothing is transmitted, so there is nothing for anyone to store.

Can I convert MP4 to MP3 online without downloading software?

Yes. This is an online MP4 to MP3 converter that runs in your browser, so there is nothing to install and no app to trust with your files. It works the same on a phone.

Does converting MP4 to MP3 lose quality?

The picture track is discarded and only the sound is kept, encoded at the bitrate you choose.

How do I convert MP4 to MP3 on Windows, Mac or Linux?

The same way on all three: open this page in Chrome, Edge, Firefox or Safari, drop the MP4 file, press Convert and download the MP3. Nothing is installed and no admin permission is needed.

Can I convert MP4 to MP3 on an iPhone or Android phone?

Yes. Open this page in Safari or Chrome on the phone, pick the file from Photos or Files, tap Convert and save the result. The conversion runs on the phone itself, so it works on mobile data without uploading anything.

Can I convert several MP4 files at once?

Yes. Select as many files as you like and they are converted one after another in a single tap, with a download for each and a zip of all of them.

Should I keep the original MP4 file?

Yes — keep it, converting never touches it. The reason to make a copy in another format is that MP4 plays nearly everywhere, but not inside every editor, browser or upload form.

How long does it take?

Roughly as long as the clip itself for high-definition video, because every frame is decoded and re-encoded on your own machine. Keep the tab in the foreground while it works.

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