There are many differences between the Book and Movie. I'll be mentioning the major differences. This is only part one, featuring only the first book\movie of Harry Potter - The sorcerers stone.
Harry Potter and the Sorcerers Stone 1. The Movie is named "Harry Potter and the Sorcerers Stone" but the Book is named Harry Potter and the Philosophers Stone" 2. In the book, the story begins from before Harry was brought to the Dursleys, but in the Movie it starts from Harry being left on the Dursleys doorstep. 3. In the Book, Dudley knows about the magic, but in the Movie, he finds out only when Harry gets his Letter. 4. In the book, Hagrid tells Harry that he got expelled from Hogwarts. He doesn't tell this in the Movie. 5. Harry meets Draco Malfoy in Diagon Alley in the books. But in the Movie, he meets Draco only in Hogwarts, before the sorting. 6. In the book, The Sorting Hat sings a song, which does not happen in the Movie
. It would have been nice if it had. 7. In the books, Percy wears glasses, but not in the movie. 8. Draco challenges Harry to a duel, but actually tips off Filch in the books, Neville is also with them, but in the Movies, Harry, Ron and Hermione are actually in Hagrid's hut. 9. Snape being the referee in the quidditch match is omitted in the Movie.