MP4 to MP3
Extract the audio from a MP4 file and save it as an MP3, right in your browser. Your video is never uploaded.
More presets
Jump to another preset — each opens its own page ready to go:
How to convert MP4 to MP3
- Drop in your MP4 file.
- Choose MP3 (or WAV).
- Extract and download the audio.
About converting MP4 to MP3
Converting MP4 to MP3 pulls just the audio track out of the video and re-encodes it as a compact MP3 — perfect for saving music, podcasts, lectures or voice notes from a clip without the video. The original file is left untouched.
It all runs in your browser using the Web Audio API, so even large or private videos stay on your device. Choose MP3 for a small, universally-playable file, or WAV for lossless audio.
Pulls the soundtrack out of an MP4 — lecture audio, interviews, music from a recording — and encodes a genuine 128 kbps MP3, entirely in your browser. No upload means a gigabyte-scale video does not spend twenty minutes on a progress bar first; the audio track is decoded and converted on your own machine.
Frequently asked questions
Is my video uploaded?
No. The audio is extracted entirely in your browser, so your MP4 file never leaves your device.
What formats can I convert?
Any video your browser can decode — MP4, MOV, WebM, M4V and more — and the audio downloads as MP3 or WAV.
Does it keep the video?
No — this extracts only the audio track to MP3. Your original video file stays untouched on your device.
Will the audio quality be good?
MP3 export is 128 kbps, fine for speech and music; choose WAV for a lossless copy of the source audio.
Will any MP4 file work?
Any MP4 whose audio your browser can decode — which covers AAC and MP3 tracks, i.e. virtually everything phones, cameras and editors produce. The rare MP4 with an exotic audio codec will fail to decode; trying it in Chrome or Edge gives the best codec coverage.