Most Viewed YouTube Channels

A video view is when someone clicks and views a YouTube video for a certain length of time. This is based off of YouTube's current algorithm, where a "view" on a video is based on retention time. Prior to 2012, the YouTube algorithm was based on a view bases, where even clicking on a video for even as short as a second counted as a view for that video. However, in 2012, YouTube's algorithm shifted to where views were based on retention time and watch minutes. Since this algorithm shift, several YouTube channels have gained millions to even tens of billions of views.