Enter your guest count and whether you're buying bone-in or boneless to see the total weight to buy.
Bone-in roasts need more raw weight per person because bone doesn't add edible meat, and some weight is lost to trimming and cooking shrinkage. Standard butcher guidance is about 3/4 to 1 pound of bone-in prime rib, or about 1/2 pound of boneless, per person as a main course.
Source: Based on standard butcher and culinary guidance of about 1/2 lb boneless or 3/4–1 lb bone-in per person for a main course serving.
Plan for about 3/4 to 1 pound of bone-in prime rib per guest for a generous main-course serving; this calculator uses 7/8 lb per person as a middle estimate.
Boneless roasts have no inedible bone weight, so about 1/2 pound per person is a standard serving estimate for a main course.
Yes — add roughly an extra 1/4 to 1/2 pound per person you want to have leftovers for, since prime rib sandwiches and hash are popular next-day uses.
Not happy with our calculations or how it works? Let us know.
Have a suggestion for a calculator you don't see here? Let us know.
No calculators match your search.