BTS fans, known as the ARMY (Adorable Representative M.C. for Youth), number around 90 million worldwide based on social media followers and engagement across platforms including Instagram, YouTube, and Twitter. BTS has over 60 million Instagram followers, around 74 million YouTube subscribers from their fandom, and approximately 42 million Twitter followers, which collectively indicate a massive global fanbase. The fandom is very active online, with billions of mentions and hundreds of millions of related tweets in recent years, showing deep engagement beyond mere numbers.
Additionally, surveys and fan events have recorded participation from hundreds of thousands to millions of fans worldwide, with a broad geographic distribution including countries like Indonesia, Mexico, the United States, and the Philippines. The BTS ARMY is recognized not only for its size but for its organized activity and influence on social media and music charts.
Thus, the BTS fanbase or ARMY consists of tens of millions of dedicated fans globally, with estimates around 90 million based on combined social media followings and fan participation.