* Manga: The original Fullmetal Alchemist manga has sold over 80 million copies worldwide.
* Anime: The first Fullmetal Alchemist anime adaptation (2003-2004) has sold 2.5 million copies on DVD and Blu-ray in Japan alone.
* Fullmetal Alchemist: Brotherhood: The second, more faithful anime adaptation (2009-2010) is even more popular. While exact sales figures aren't publicly available, it's estimated to have sold millions of copies on DVD and Blu-ray, both in Japan and internationally.
Overall: While a precise number is hard to find, it's safe to say that Fullmetal Alchemist has sold tens of millions of copies across its various formats, making it one of the most successful anime/manga franchises in history.