One of the most common points of confusion for folks diving into 'Tokyo Ghoul' is the chapter count, especially because it spans two main series. The original 'Tokyo Ghoul' manga runs for 143 chapters. That's a solid, contained story that really explores Kaneki Ken's transformation and the brutal world he's thrust into. The sequel, 'Tokyo Ghoul:re', is actually longer, concluding at 179 chapters. So if you're reading straight through from start to finish, you're looking at a total of 322 chapters of main storyline content.
It's worth noting that the chapter numbering in ':re' resets to 1, which makes sense given the time skip and shift in perspective, but it's all part of the same core narrative. Some editions or digital releases might bundle extra material or side stories, but the core chapter counts for the two series are pretty firmly set at those numbers. Pacing-wise, the original 143 chapters feel incredibly dense, while ':re' uses its extra length to expand the cast and the scope of the conflict in a major way.
The sheer volume does represent a significant reading commitment, but the way Sui Ishida structured the arcs across both series means there's rarely a dull moment, even with that many chapters to get through. I always found the character development in the later parts of ':re' to be worth the extended page count.