3 lbs of roast beef will feed between 6 to 8 people depending on the cut of beef and the amount of roast beef served per person.
For bone in roast roast beef plan for around 1 lb of roast beef per person.
A bone in standing rib roast can feed around 2 people per bone.
A boneless roast you should plan for about 1/2 lb person and a 3 lb tenderloin can feed around 6 people.
For a beef chuck roast a 3 lb roast can feed around 8 people and with a serving size of around 3 ounces.
Boneless chuck roasts will yield more servings than bone in chuck roasts.
If you're serving for a large holiday meal with other food then you can plan on 1/2 lb to 3/4 lb per person.
Beef chuck roast is an excellent source of protein, vitamin B12 and iron.
A serving size is about 3 ounces, which is about the size of a deck of playing cards.
A 3-pound roast will make about eight servings.