MP4 video → MP3
Convert MP4 video to MP3
Convert MP4 video (.mp4) to MP3 (.mp3) right in your browser. Free and unlimited. Your files never leave your device.
Drop a file, or click to browse
Drop a file anywhere, click to browse, or paste an image. Files never leave your device.
Extracts the audio track; the video is discarded.
Pulling the audio out of a video
Lifting the sound out of an MP4 is what most people come here for — to save a song or mix, or to keep a podcast, interview or recorded lecture as something to listen to on the move. You end up with just the audio, in a far smaller file.
Morphr decodes the MP4’s audio track and encodes it as MP3 in your browser. The video is discarded; only the sound is kept. Since it’s a real re-encode, a long video takes a little time, and you’ll see progress as it runs.
Good to know
- MP3 plays on essentially anything, which is why it’s the safe choice for audio.
- Only the audio is extracted — there’s no video in the result.
- The whole thing runs locally; nothing is uploaded.
The private way to turn MP4 video into MP3
With Morphr, the whole conversion runs inside your browser tab using your browser's built-in decoder, so your file is never uploaded to a server, queued, or stored. That makes it a safe choice for personal photos, scanned documents and anything you'd rather not hand to a third party.
New to these formats? Read the guides on MP4 video and MP3.
Frequently asked questions
- How do I convert MP4 video to MP3?
- Drop your MP4 video file onto the converter above (or click to browse), and Morphr converts it to MP3 right in your browser. When it's done, click download — there's nothing to install and no account to create.
- What do I get converting MP4 video to MP3?
- A single still frame, saved as MP3. Morphr extracts the frame in your browser — it doesn't re-encode the video, so the audio and motion aren't included, just the picture.
- Are my files uploaded to a server?
- No. The conversion runs entirely in your browser, so your MP4 video file never leaves your device.