Convert MP4 to MP3
Rip the audio track out of any MP4 video into a clean 192 kbps MP3 — music, lectures, interviews.
- Your MP4 file never leaves your device
- No sign-up, no watermark, no daily quota
- Handles files up to about 900 MB — your browser's memory ceiling
What happens when you convert MP4 to MP3
Discards the video stream entirely and re-encodes just the audio track to MP3 at 192 kbps CBR using LAME — a setting most listeners cannot distinguish from the source on ordinary equipment. Because the video is dropped rather than processed, this is much faster than a full video conversion.
Good for
- Keeping the audio from a lecture, interview or podcast recording
- Getting a music track out of a video file for offline listening
- Producing something small enough to email or load onto an old MP3 player
Worth knowing
- A video with no audio track cannot produce an MP3, and the converter will tell you so rather than emitting an empty file.
- The audio is re-encoded, so this is lossy-to-lossy; quality is capped by the original.
- Chapter markers, subtitles and video metadata are not carried across.
MP4 to MP3, answered
How do I convert MP4 to MP3?
Drop your MP4 file into the box above (or click to browse), make sure MP3 is selected as the target format, press Convert, then download the result.
Is this MP4 to MP3 converter really private?
Yes. The conversion runs entirely in your browser — your MP4 file is never uploaded to any server, so nobody but you ever sees it.
Is converting MP4 to MP3 free?
Completely free — no watermarks, no sign-up and no daily quota. Processing happens on your own device, so there are no server costs to pass on to you.
Can I convert multiple MP4 files at once?
Yes — drop as many files as you like. Convert them individually or use "Convert all", then download everything as a single ZIP.