J. K. Rowling books in order
34 books in the catalogue, about 405 hours of reading in all; the shortest takes 26 minutes and the longest 63 hours.
4 series and 16 standalone books in the catalogue.
Harry Potter
9 books 0.5 
Harry Potter prequel 6.2 h 1 
Harry Potter and the Philosopher's Stone 5.6 h 2 
Harry Potter and the Chamber of Secrets 6.3 h 3 
Harry Potter and the Prisoner of Azkaban 7.6 h 4 
Harry Potter and the Goblet of Fire 12.3 h 5 
Harry Potter and the Order of the Phoenix 16.0 h 6 
Harry Potter and the Half-Blood Prince 11.7 h 7 
Harry Potter and the Deathly Hallows 12.9 h 
Harry Potter and the Cursed Child 6.3 h
Harry Potter prequel 6.2 h 1 Harry Potter and the Philosopher's Stone 5.6 h 2 Harry Potter and the Chamber of Secrets 6.3 h 3 Harry Potter and the Prisoner of Azkaban 7.6 h 4 Harry Potter and the Goblet of Fire 12.3 h 5 Harry Potter and the Order of the Phoenix 16.0 h 6 Harry Potter and the Half-Blood Prince 11.7 h 7 Harry Potter and the Deathly Hallows 12.9 h Harry Potter and the Cursed Child 6.3 h Hogwarts Library Books
3 books
Cormoran Strike
8 books 1 
The Cuckoo's Calling 8.8 h 
Career of Evil 9.7 h 4 
Lethal White 12.0 h 5 
Troubled Blood 17.3 h 6 
The Ink Black Heart 24.7 h
The Cuckoo's Calling 8.8 h 2 The Silkworm length not known
3 Career of Evil 9.7 h 4 Lethal White 12.0 h 5 Troubled Blood 17.3 h 6 The Ink Black Heart 24.7 h 7 The Running Grave length not known
8 The Hallmarked Man length not known
Fantastic Beasts and Where to Find Them: The Original Screenplay 5.6 h Fantastic Beasts: The Crimes of Grindelwald — The Original Screenplay length not known
Fantastic Beasts: The Secrets of Dumbledore — The Original Screenplay length not known
Standalone books
Harry Potter (Series) 1-4 24.3 h 
Harry Potter (Series) 1-7 62.8 h 
Harry Potter Boxed Set 62.7 h Hogwarts Journal 1.2 h 
Fantastic Beasts and Where to Find Them 2.1 h 
Harry Potter (Series) 1-5 36.7 h 
Animales Fantasticos y Donde Encontrarlos 2.9 h 
Hogwarts Library 6.4 h 
The Casual Vacancy 9.4 h 
Fantastic Beasts 5.3 h 
The Silkworm 8.5 h 
Very Good Lives 1.3 h 
Harry Potter. A History of Magic 3.6 h 
The Ickabog 5.6 h 
Harry Potter 4.4 h 
The Christmas Pig 5.3 h Collected editions
Volumes that gather several of the books above.
