YTD Video Downloader is the most apparent choice if you are looking for a programme that can convert video from YouTube to MP3 files in the easiest way possible.

You may download an infinite number of videos and playlists from a wide variety of streaming websites online if you have the Pro edition. You are able to scrape and convert content not just from YouTube videos, but also from Vimeo, TikTok, Bing, Yahoo!, and many more websites.
To convert the videos online for free, visit Youtube to MP3 Converter.