This is a great guide that will let you prepare and feed roast pork for a big group of any size.

Plus we have a handy table of the exact amounts you need to feed groups between 5, 10, 25, 50, and 100 people.

What is the yield of roast pork?  For boneless pork roast use an average of 32% weight loss due to cooking. For bone-in cuts it can be as high as 40% or more.

How Much Does 4 Pounds of Pork Feed?

What is the serving size for pork roast? For a Christmas Dinner place to serve 6oz of pork roast per person.

How Much Roast Pork Per Person Do you need for 20 people