Each week, Billboard publishes the Hot 100 on it website, which is a listing of the top songs, using a variety of factors including sales, streams and radio play, in the United States for that week. Alternatively, Mediabase compiles the top 40 songs based solely on radio play, published through USA Today.
Billboard's Hot 100 lists not only the top songs, but also information on how many weeks the song has been in the Hot 100, the song's position on the chart the previous week and the highest rank the song has achieved so far. Billboard also has other music charts, including the Billboard 200, which lists the best-selling and most-streamed albums for the week, and genre-based charts, which list the top songs and albums for different genres. Billboard's charts also include listings like Artist 100 list, which takes into consideration streaming, radio play, sales data and an artist's interactions with fans on social media to compile a list of top artists for the week.
Mediabase's charts are compiled entirely through its tools that monitor which songs are played on more than 1,800 radio stations in the United States and Canada, as well as the number of times each radio station plays a given song. Ryan Seacrest's "American Top 40" radio program airs the 40 highest-ranked songs from Mediabase's charts each week.