Large pizzas, which are 14 inches in diameter, are usually cut into 8-10 slices. Most pizza companies honor requests for the pizza to be cut into more, smaller slices.
Papa John's large pizzas have eight slices, as do Pizza Hut's and Domino's large pizzas. Round Table Pizza cuts its large pizzas into 12 slices. Jet's Pizza cuts its large pizzas into 10 slices for regular crust and 24 slices for thin. Thin crust pizzas may be cut differently, often featuring smaller square slices, because the traditional slices collapse. Most companies' websites list the slices per pizza as serving sizes on their nutrition page.