How much pasta is a single serving?

Figuring out how much pasta makes a single serving depends on what course it's for and how hungry the diners are. I'm a little bit obsessed with my wonderful purple electronic scale and prefer to weigh everything, but measuring is just as good, but varies a lot depending on the shape of the pasta. You can also buy a contraption with holes in called a pasta measure where you fit long pasta like spaghetti through holes.

Single serving by weight:

• 2 oz (57 g) of dry pasta for a first course or side dish. 
• 3 to 4 oz (85 to 113 g) of pasta for a main course. 

Single serving by volume:

• 2 oz of spaghetti, fettucini, spaghettini, capellini, fedelini or vermicelli will fit in a ⅞" (24 mm) diameter circle between your thumb and forefinger, about the diameter of a Canadian quarter.
• A 2 oz (56 g) measure of elbow macaroni is a ½ cup of dried pasta.
• A 2 oz (56 g) measure of penne pasta is ¾ cup of dried pasta.
• A 2 oz (56 g) measure of ribbed lasagna is approximately 2½ pieces of dry lasagna sheets.
• A 2 oz (56 g) measure of egg noodles is 1¼ cup.