How it works
- Click “Choose files” or drop your files into the box.
- Adjust the options if needed (quality, resolution, pages…).
- Click “Convert”: everything happens on your device, in a few seconds.
- Download the result (or all files at once as a .zip).
MP4 to MP3 : what to know
Great for keeping the audio of a personal video, a talk, a class or a rehearsal, or for listening to a recording without the picture. The audio is extracted by your browser and encoded to MP3 on your device: nothing is uploaded. Local processing works for videos up to about 700 MB; very long videos need a lot of memory. Only use this tool on files you have the right to copy.
Frequently asked questions
Which MP3 quality should I choose?
192 kbps is a good balance for music; 128 kbps is enough for speech (podcasts, classes); 320 kbps is the highest MP3 quality.
Can I convert a YouTube video?
No, the tool only converts files that are on your device. Downloading YouTube videos isn't allowed by YouTube's terms unless the creator permits it.
Which video formats are supported?
MP4, MOV (iPhone), M4V and WebM play in all recent browsers; MKV and AVI depend on the browser and the audio codec. Audio files (M4A, WAV, OGG, FLAC) are supported too.
Are my files uploaded to a server?
No. The conversion is done by your browser, on your computer or phone: your files are never sent over the Internet or kept by Tooleon. You can even go offline once the page has loaded.
Is it really free?
Yes: free, no sign-up, no watermark and no limit on conversions. The site is funded by ads.
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