How Much to Buy...
As a main course, 10 to 12 ounces of beef satisfies the average appetite. Keep in mind that roasts lose some weight in the oven. When in doubt, buy a little extra — leftover slices of roast beef make incredible sandwiches.
Beef Boneless Chuck Pot Roast Beef Boneless Chuck Pot Roast most popularMost popular thickness

Size Serves
Small
(about 3-5 lb)
5 to 7 people
Medium
(about 5-7 lb)
7 to 9 people
Large
(about 7-10 lb)
9 to 11 people