Depending on the size and the shape of the dry pasta, 2 ounces of uncooked pasta will yield between 3/4 cup and 1 1/4 cups of cooked pasta. Larger pastas yield smaller amounts cooked, while smaller pastas yield larger amounts.
Two ounces of dried pasta is the recommended amount of pasta per serving per person. To simplify calculations, one 16-ounce box of pasta should feed eight people one serving of cooked pasta or four people two servings of cooked pasta. For measuring purposes, 2 ounces of dry pasta is between 1/2 and 3/4 cup of uncooked pasta shapes or a handful of spaghetti about 2 1/8 inches in diameter.