3 tools for convert youtube to mp3

1. 1conv.com

The link is as follows:convert youtube to mp3
the advantage is simple and fast, it can detect subtitle intelligence. If the language of subtitles are not what you want, you can try the link suppose you are japanese,and another advantage is website won't limit the download speed.

2. 2conv.com

The link is as follows:convert youtube video to mp3
The website is convenient to use, The flaw is that there are a lot of ads on download page.

3. 4K YouTube to MP3

4K YouTube to MP3
unlike some YouTube to MP3 converters, 4K YouTube to MP3 comes with no bundled extra software. Upgrading to the premium version for a one-off fee will allow you to download entire playlists, the disadvantage is the website have Pop-ups, it affect the user's experience.

Notice: download videos and mp3 must be licensed by the version owner and used only for study and research, and not for commercial use and dissemination.