How Much Prime Rib per Person For A Big Group

How To Calculate How Many Pounds of Prime Rib per Person For A Large Group

Prime rib is really a delectable cut of beef and one of the best when entertaining a crowd. Especially if you want to impress your family or guests at a special dinner or an event like a wedding with a memorable beef main.

Did you know that only about 2% of beef cuts make the USDA prime roast category or grade versus choice or select beef.

It is also known as a Standing Rib Roast and is in the group of nine primal cuts of beef.

But what is the prime rib serving size?

See our Prime Rib Calculator below, which will take into account, the guest mix, how many mains you are serving as well as side dishes, and give you how much to serve as well as how much to buy.

Many people use this prime rib calculator per person for Thanksgiving, Christmas, and other family gatherings to get precisely how much prime rib to buy and serve for each guest.

Many people use this calculator for Thanksgiving, Christmas, and other family gatherings to get exactly how much prime rib to buy and serve for each guest.

Top Sides To Serve With Prime Rib Infographic
Top Sides To Serve With Prime Rib For A Crowd

How Much Prime Rib Do You Need

The general rule of thumb for purchasing prime rib is to buy 12 oz per person.

Or for bone-in beef standing rib roast, purchase 1 lb per person. For example, when making a standing beef (bone-in) roast rib, use approximately 1.5 guests per bone.

Also, take into account the folks who are coming, are they big eaters, will there be youngsters there, and consider just the quantity of side dishes you will serve.

If you are planning a big holiday meal with lots of entrees, starters, and in general, plenty of food, plan on ½ pound of prime rib per guest.

If you are having a Thanksgiving buffet, guests helping themselves will often take a little more, especially if the prime rib is the only meat dish. So you need to allow for that by budgeting up to ¾ pound.

Calculator For How Much Prime Rib To Buy and Serve Per Person
Calculator For How Much Prime Rib To Buy and Serve Per Person

Prime Rib Calculator For How Do I Need Per Person

However, there will also be variations depending on your guest list makeup and how many side dishes you serve.

If you’re anxious about catering to a crowd, purchase a little extra since you can easily enjoy the leftovers the very next day, and they tend to improve with time as they rest in their flavors. You can also read our guide on “Catering For A Crowd, “ which will give you some more ideas for feeding lots of people.

Also, consider the difference between how much prime rib to purchase per guest for a holiday dinner vs. how much you will serve per person – this is code for do not forget to take into consideration that meat shrinks by 25-40 percent during cooking, so ½ pound of raw prime rib is likely to yield only a bit over a ¼ pound when cooked. Do not let your guests go hungry.

How much Prime Rib Do I need Per Person
How much Prime Rib Roast Do I need Per Person

How To Use The Prime Rib Per Person Calculator

For the most accurate Click On The Guest Detail to add how many women, men, teenagers, etc are coming to your big prime rib event. The calculator will account for that guest mix.

[CP_CALCULATED_FIELDS id=”9″]


Table of Exact Quantities of Prime Rib Per Person

Number Of PeoplePounds Of Boneless RibRibs Needed (Bone-in)Cooking TimeCooking Temperature
634 Bone-in Roast2.5 hours220-230 F
845 Bone-in Roast3 hours220-230 F
1262 x 4 Bone Roasts3 hours220-230 F
50255 x 6 Bone Roasts3.5 hours220-230 F
Table of Standing Beef Rib Roast Pounds and Cooking Times and Temperatures – when Feeding a Crowd.

What is Prime Rib?

Prime is a cut of beef from the Primal Rib area of a steer – hence the name Prime Rib. This section is also called the back upper rib section.

Is Prime Rib and Rib Eye the Same?

The Prime Rib vs. Rib Eye – comes from the same part of the steer, and the rib eye is the tender, marbled part of the boned counterpart – it just has been cut out by the butcher.

What Part Of The Beef Is Prime Rib

Why is Prime Rib so Good?

Prime Rib is good or so special because it has an “eye” of marble meat in the center of the rib cut.  It is also worth noting that this part of the beef does not get a lot of work – so the area is a beautiful tender and succulent cut of beef – that is why it is so special.

What Is the Price of Prime Rib per Pound

The price of prime rib depends on the quality of the cut, the size of the portion, the type of cooking method used, and the amount of prime rib you order. A typical prime rib will cost around $30-$40 per pound. 

Looking on the Costco retail site it has a Black Angus Prime Rib Roast at around 27 dollars per pound. With a typical roast size being in the 7-9 lb range.

Boneless vs. Bone-in Prime Rib

How do you decide what cut to buy? At the supermarket or local butcher, you will be given the options of what you want.

Bone-in will always be tastier because the bone will lend flavor to the meat when cooking versus boneless, where the meat is trimmed from the bone. Why – because bones give taste to beef.

Is Boneless or Bone-In Better when Catering to A Large Group?

If you are planning on grilling Prime Rib for a large group, then boneless will cook faster and more evenly. This is why many people will choose boneless roast for a crowd and bone-in for a smaller family dinner.

How To Shop For Prime Rib

The best way to shop for prime rib is to start by looking at the price per pound. Remember also that meat shrinks and will reduce in weight when cooking, so you always need to buy a little more to allow for this.

See our calculator above to work out how much Raw or Uncooked Prime Rib to buy.

In some states, it is also called a standing rib roast – the name coming from the way the ribs stand up during and after cooking.

Do not be afraid of the fat level, as when rendered properly, the fat really adds to the overall flavor of the meat.

In fact, in a Prime Rib and Steak Survey of Consumers who were meat-eaters, 80 percent said that having a good amount of fat content in the raw meat was the key to a flavorsome beef dish and rave reviews from guests or family members.

If you are really looking to impress your guests, then consider buying – “Dry Aged” Prime Rib. The aging process makes it even more tender, juicy, and flavorsome.

Look out for and buy – USDA Prime Grade Roast

The best way to get the best and highest quality is to choose the USDA grade of PRIME. It will be more expensive, however.

Only 2-3 pieces out of a hundred will be graded USDA Prime – so you may need to order it in advance.

What Is the Most Tender Part of The Prime Rib

I chose The Small End of the Roast Ribs as this is the most tender portion.

How Much Prime Rib Per Person Should You Cook?

The amount of prime rib per person depends on a few variables, but you should generally cook at least 30 percent more to allow for meat shrinkage.

What Are Some Ways to Season Prime Rib?

The best way to season prime rib is by rubbing salt and dry rub into the meat before cooking. This helps draw out moisture from the surface of the meat, which makes the meat juicier.

What Is The Best Way To Season Prime Rib
What Is The Best Way To Season Prime Rib

Rubbing the meat with butter or oil after cooking is another great way to add flavor.

Here are the top 15 ways to Season Prime Rib in 2022

Seasoning Your Prime Rib

  1. Salt and Pepper – to bring out the natural flavor of the ribeye
  2. Butter – Butter can be used in conjunction with any other seasoning method.
  3. Soy Sauce A classic Chinese-style sauce made from soybeans and wheat flour. Use sparingly as too much will overpower the taste of the prime rib.
  4. Garlic – Garlic has an intense flavor and works well with all meats, including prime rib
  5. Herbs – thyme, oregano, basil, parsley, sage, cilantro, chives, mint, tarragon,
  6. Red pepper flakes
  7. Onion – caramelized onions, chopped onion, sliced onion
  8. Curry powder – Indian spice blend
  9. Mustard – Dijon mustard, whole grain mustard, honey mustard
  10. Sesame seeds
  11. Lemon juice
  12. Balsamic vinegar
  13. Horseradish
  14. Rosemary Rub
  15. Rosemary Olive Oil

Is Prime Rib Easy to Cook?

It depends on what cut you choose. If you want to cook a whole prime rib, it will be quite different than a boneless variety.

The best two pieces of advice are to first get a really good meat probe thermometer and experiment first before your guests arrive. Always try a recipe before serving it to guests, as there are just so many variations and practice makes perfect. 

You will also be able to test how you garnish and serve it to many people in a smaller friendly family setting. The top chefs always practice important or signature dishes like prime rib.

What Are the Best Ways to Cook Prime Rib (For a Crowd)

Cooking for a large ground will really come done to what resources you have and whether you are going to hire an extra grill or oven.

Here Are the Top 5 Ways to Cook Prime Rib In 2022

  1. Oven – this is the best way to cook prime rib for a big crowd, and in a large oven, you may be able to cook up to 2 prime ribs or more.
  2. Grilling – This is best suited to boneless, and you can fit more per size of the grill
  3. Fire Pit – why not cut the raw meat and let each guest cook their own piece on a long tong and firepit grill plate
  4. BBQ with the top down – if you have a big BBQ and you can put down the lid and slow roast prime rib to perfection
  5. In the ground – this is more an island way – make a big fire pit – set it alight some it burns down to embers. Then wrap the prime rib well in foil and set in the ground to cook. Cover with the embers and if necessary, keep the fire going to ensure heat. This way, if you know what you are doing, you can cook a large quantity in one place. The key is to try this cooking method in advance to know exactly what to do on the day and how long to cook the meat.

How to Make Prime Rib For A Crowd

Start by doing a simple recipe so that you get your temperatures and timings right for your oven. As each will vary slightly, and some will have hot spots. If you know your oven has hot or cold spots, do not forget to rotate the roast at least every 60 minutes.

How to Prepare a Rib Roast For A Crowd

Start by making a classic prime rib roast and season with salt and pepper and enhance the overall flavor with herbs and spices to give the end result of a fully seared and crackling crust on the prime rib.

Plus, we tell you how to create a delicious homemade gravy using a combination of stock and beef drippings. To see how much gravy you need per person for a big group, see our gravy resource page.

Tips for Perfect Prime Rib

One of the most important things to remember when cooking prime rib is to keep the temperature steady. This will ensure that the meat stays tender and juicy.

Tye, you roast with butcher’s string so that it cooks without separating. Space the string in 1.5 to 2-inch intervals.

You should always use a meat thermometer to check internal temperatures. You don’t want to overcook the prime rib.

To prevent sogginess, cover the prime rib with aluminum foil after roasting and let it rest for at least 5 minutes. before you cut it.

Make sure you remove the strings before carving.

I’ve found that the best way to cook a whole prime rib is to start it off in a low oven (325F/165C), then finish it on a charcoal grill over direct heat to get the crusts and burnt ends that people love.

Do not forget to sear the roast quickly (reverse searing) before cooking this adds a lot of flavors and keeps the juices inside.

Smoking a Prime Rib in a Traeger Pellet Grill can also deliver family dinner to rave about.

What Are the Best Side Dishes to Serve with Prime Rib for A Big Group?

Here are the top 15 easy side dishes to serve with prime rib in 2022

  1. Mashed Potato
  2. Cream Swiss Chard
  3. Green Bean Casserole
  4. Potato Salad
  5. Roasted Root Vegetables
  6. Baked Beans
  7. Sweet Corn
  8. Sautéed Spinach
  9. Peas
  10. Carrots
  11. Turnips
  12. Broccoli

Can Prime Rib Be Prepared in Advance for A Large Group

Both methods below can be used to prepare Standing Rib Roast in advance. You can make it 2-3 days before the guest’s arrival and store it in the fridge.

A prime rib roast is an excellent choice for entertaining guests. This type of meat has a rich flavor and tender texture.

There are two different types of cooking methods for this cut of beef. The first method involves placing the roast on a rack in a pan and baking it at a low temperature until the internal temperature reaches 145 degrees F (63 degrees C).

The second method involves searing the roast before roasting it at a higher temperature.

How to Reheat Prime Rib that Has Been Prepared in Advance

How to Reheat Prime Rib That Has Been Prepared 2 days ahead of time.

You want to reheat the roast but not overcook it. Wrapping it in tin or aluminum foil will keep the cut tender.

It’s easy to get caught up in planning an event and forget about reheating food that has been prepared ahead of time. But if you do this, you can end up with dry meat and undercooked vegetables.

You should have your oven preheated before you start reheating. If you don’t, you could burn the food before it’s done.

When you reheat prime rib, you want to make sure that you cook it long enough to heat through. How long will depend on how many pounds of meat you are reheating. The best way to tell when a reheated prime rib is done is to use a thermometer to check the internal temperature of the meat; it should be reheated to 160 F, according to the USDA. This is an internal temperature and is the recommendation for reheating leftover meat.

Clearly, that is more than the temperature of 140 for a medium result. So you will have to use your best judgment and be very confident you stored your leftovers safely.

This typically takes 90 minutes, depending on the size of the prime rib.

Top 3 Tips for Reheating Prime Rib

  1. Do not rush – be patient; doing this will preserve as much of the initial taste texture and nice pink-red color of the prime rib.
  2. As soon as the desired temperature is reached, take the roast off the stove. Don’t let it sit around too long. You want to eat it right away.
  3. Always wrap the meat with foil before reheating or if you are using au jus to moisten the prime rib, cover the whole roasting or baking dish with aluminum foil.

What Are the Most Popular Ways when Serving Leftover Prime Rib

Here are the top 7 ways to use leftover prime rib for 2022

  1. Make a prime rib hoagie
  2. Prime Rib Sliders with horseradish sauce.
  3. Open Faces Sourdough Sandwich – Leftover prime rib is great for sandwiches because it doesn’t dry out like other cuts of beef.
  4. Make Asian Beef Soup
  5. Stroganoff of Prime Rib is amazing with onion and sour cream
  6. Leftover Prime Rib Sandwiches for lunch Toasted
  7. Thick Whole Steakburgers with coleslaw and french fries

How Long Can Prime Rib Last In The Fridge Before Cooking

Raw or uncooked Prime rib can be stored in the refrigerator for 3 to 4 days in an airtight sealed container.

After that, you should cook it.

If you know how to do it, then using the dry-age system, you can keep raw prime rib in the refrigerator for around 3 months. This is the maximum length of time according to the USDA.

How To Dry-Age Store Raw Prime Rib

Dry aging meat is to let the natural storage take care of the beef. During this time, the muscles relax, and the meat loses its red color.

Start by completely drying the raw prime rib before placing it in the fridge.

You must also leave it uncovered.

Using this preparation method, it can last for up to 3 months in the cool fridge.

How to Store Uncooked Prime Rib Roast for 5 Days?

I purchased a 7lb Costco rib roast. Can I store it for 5 days?

Storing it for five days is right on the edge of food-safe practices. You must wrap it well in airtight plastic and also in an airtight container. Furthermore, you must refrigerate it at 40 degrees Fahrenheit. To do this, place it in the coldest part of the fridges, usually at the back.

The USDA recommends storing raw meats for no longer than three days.

Can You Freeze Prime Rib

Prime Rib can be frozen successfully if you place it in the freezer within 2-3 days of purchasing.

Prime rib is a fantastic main dish that really can easily sustain a large household. As a result, if it’s on sale, you may freeze it till your big family occasion!

Raw or uncooked prime rib may be frozen for up to twelve months.

While cooked prime rib can be frozen for up to six months.

How to Freeze Prime Rib For A Big Group

However, to achieve this optimum freezer storage time, the prime rib must be carefully packaged before freezing.

To stop freezer burn and discolorization then, I suggest a 3-layer packing.

First covering of airtight seal plastic or freezer thick plastic wrap used.

Second, aluminum or tin foil should also be tightly wrapped around the plastic layer.

Finally, use a vacuum seal bag to have a long-lasting frozen prime rib.

How To Thaw Prime Rib

When you’re ready to eat your frozen prime rib, defrost it in the refrigerator.  This will take 24 to 48 hours, depending on the size.

You may also speed it up with water. But this is not really the food-safe method because the outside of the beef is at room temperature while the inside is still frozen. So the result means bacteria can grow on the outside while the inside beef is still thawing.

Cook immediately if you use this method, and ensure that the interior is at 165F if you have used water.

It is best to use the fridge to defrost a standing roast.

How Long Can You Keep a Defrosted Prime Rib in the Fridge?

What if you’ve already defrosted your prime rib? Is it still safe in the fridge? If so, how long will it last?

After defrosting (in the fridge), your uncooked prime rib can keep in the fridge for up to three days.

While defrosting, place a dish underneath the meat to catch any seeping juice.

How Can I Keep My Raw Prime Rib From Going Bad After Defrosting In The Fridge?

The best way is to endure it is highly wrapped in airtight plastic wrap or similar.

Refrigerating defrosted prime rib for a long time is not recommended since it may change the flavor, quality, and freshness of the meat.

Molds may also be introduced accidentally due to a temperature shift when the fridge door is opened.

Where Is the Best Place to Eat Prime Rib in San Franciso

Head to Nob Hill, where you will find the House of Prime Rib; there, you can have prime rib carved in front of you from stainless steel serving carts. 

How to Choose the Best Prime Rib

Choosing the perfect prime rib can be tricky. There are several different grades available, each with their own unique flavor profile. So how do you choose the best prime rib?

How To Shop For Prime Rib

What is my budget – How much fat does the cut contain? Is it tender enough to eat with just a fork? And finally, is it affordable? Once you’ve answered these questions, you can narrow down your options based on price, taste preferences, and availability.

How do you order a prime rib from the butcher? – Of course, there are plenty of other factors to consider when shopping for prime rib. Look for USDA Choice or Select grades, which indicate that the meat was raised according to strict guidelines set by the U.S. Department of Agriculture. Also, look for cuts that are labeled “prime,” which means that the meat is free of visible defects. Finally, ask your butcher for recommendations. He or she might be able to point you toward specific cuts that are particularly delicious or easy to prepare.

1. Choose A Good Cut

The first step to getting the most out of your prime rib purchase is finding a good cut and grade. 

There are four main types of beef roasts: Choice, Select, Prime, and Fancy. All of these terms refer to how well the animal was raised and fed.

2. Don’t Be Afraid Of Shrinkage

When you cook prime rib, you want to avoid overcooking it. This causes the meat to dry out and lose moisture. When you shop for prime rib, ask the butcher to trim off any excess fat and sinew. Then ask him to cut the meat into portions that fit your family size. If you’re cooking prime rib for yourself, keep an eye on the temperature gauge. Cook the prime rib to 145°F internal temperature. Once it reaches that mark, let it rest for 10 minutes and then slice it up. Remember to check the temperature periodically during the resting period.

3. Make Sure Your Meat Is Grass Feed for Top Quality.

If you live near a farm where cattle are raised specifically for the purpose of being grass, you could end up eating the best prime rib without realizing it. These animals are called “grass-fed.”

4. Choose Bone in For the Most Taste.

Prime Rib is a popular cut of beef that’s usually served with mashed potatoes and gravy. But choosing the right prime rib cuts can be tricky. Prime rib is generally sold either boneless or bone-in, and each type offers different benefits. Boneless prime rib is easier to cook, but it lacks flavor. Bone-in prime rib has a fuller and much richer taste.

To choose the right prime rib, look for meat that’s firm and moist. Avoid prime rib that’s dry or tough. Also, avoid prime rib that’s been frozen; it tends to lose moisture during freezing. Finally, look for prime rib that’s labeled “choice,” “select,” or “prime.” These labels indicate that the meat was selected based on quality rather than quantity.

What Is the Most Tender Part of The Prime Rib

Ask your butcher what cut of beef he recommends for a prime-rib dinner party. He might say “the small end” this is commonly known as the most tender.

How Much Prime Rib Do I Need for 8 Adults

You need 8 lbs of prime rib for 8 adults. You should plan on serving about one pound of bone-­in prime ribs per adult. A four-bone rib roast will comfortably feed eight adults.

How Many Does a 10 Pound Prime Rib Feed

A 10 lb bone-in rib roast will feed up to 10 people.

How Many People Will 5 lbs of Prime Rib Serve

A 5 lb bone-in rib roast will feed up to 5 people.

How Many Does a 4 lb Prime Rib Feed

You may serve 3-4 people with a 4 lb beef rib roast.

What Is the Best Part of Prime Rib for A Gourmet Family Dinner?

What Is a King Cut of A Prime Rib Roast? 

There’s nothing like eating a juicy piece of prime rib, and it has a great flavor profile. The short end, first cut, or loin end are the best part of a standing rib roast. The loin contains more marbling, which is the white fat that runs throughout the muscle tissue. Marbling provides a rich flavor and texture to the meat.

The prime rib roast isn’t only delicious; it’s also versatile. You can cook it any number of ways, depending on what kind of meal you’d like to serve. You can grill it, bake it, broil it, pan-sear it, or smoke it. Whatever method you decide to use, the end result should always be a flavorful, juicy steak.

See our Webstory about How much prime rib to serve your guests at a family party.

What Is a Prime Rib Called at The Grocery Store

Most stores or supermarkets call either beef rib roast or standing rib roast. However, get to know your local butcher as my experience is that not many stores actually have prime rib. in stock, certainly not the prime cuts. Prime-graded rib roast beef is significantly more expensive than the lower levels like “choice” 

The last time I went to Costco for a standing rib roast, they said they would order it for me; however, I had to pay first or upfront.