Convert MP4 to MP3 for Free

Upload a video — its audio track will be saved as MP3

🔒 Nothing is uploaded to a server — all processing happens on your device

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Drag a file here or

Upload a video — its audio track will be saved as MP3

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How it works

Converto reads the video file you upload, strips out the audio track, and encodes it directly to MP3 — ideal when you only need the sound from an MP4 video, like a lecture, podcast recording, or music video. The whole extraction happens with a browser-based FFmpeg build, with nothing sent to a server.

Frequently asked questions

How do I extract audio from an MP4 file?

Upload your MP4 (or MOV, MKV, AVI, WebM) file above, pick an MP3 quality, and click Convert — Converto extracts the audio track and gives you a downloadable MP3.

Can I extract audio from a video that isn't MP4?

Yes — this tool also accepts MOV, MKV, AVI and WebM video files, not just MP4, and always outputs MP3.

Does extracting audio from MP4 to MP3 reduce the sound quality?

The 192 kbps 'High' setting is close to the source video's original audio quality; 128 kbps and 96 kbps trade a little quality for a smaller MP3 file.