How Many Pizzas For 20 People?

Are you planning a party or large gathering and faced with the question “How many pizzas for 20 people?”. This is a dilemma that can leave party planners feeling a bit overwhelmed.

After all, there are so many factors to consider – the appetites of your guests, the variety of toppings they prefer, and even the possibility of leftovers. And let’s not forget about pleasing everyone’s taste buds while staying within budget.

This post not only assists you in calculating the ideal number of pizzas for 20 people but also analyzes different scenarios and provides you with some practical tips to ensure none of your guests leave hungry or dissatisfied. 

Why Does Knowing How Many Pizzas Needed For 20 People Matter?

Knowing how many pizzas to get for a group of 20 people is crucial for various reasons. From hosting a large party or event to ordering takeout for a family gathering, having an accurate estimate of the number of pizzas needed can save you time, money, and stress.

One of the main reasons why knowing this information matters is budgeting. Pizza may seem like an inexpensive food option, but when feeding a large group, the costs can quickly add up. By knowing how many pizzas to order for 20 people, you can plan your budget accordingly and avoid any unexpected expenses.

In addition to budgeting, knowing this number also helps with time management. If you are hosting a party or event, you want to make sure there is enough food for everyone without having to wait a long time for the pizzas to be delivered. By knowing how many pizzas to order, you can coordinate with the pizza place and ensure that the food will arrive on time.

Moreover, understanding how many pizzas are needed for 20 people also allows for consideration of dietary restrictions or preferences. 

For example, if there are vegetarians or individuals with gluten allergies in the group, you can order a specific number of pizzas to accommodate their needs. This not only shows thoughtfulness towards your guests but also avoids any potential food mishaps.

Knowing this information may also help with portion control. It is easy to overestimate or underestimate the amount of food needed for a group, leading to either wasted leftovers or hungry guests. By knowing the exact number of pizzas for 20 people, you can ensure that everyone gets an appropriate portion size and minimize any food waste.

So, knowing how many pizzas should be ordered for 20 people has significant implications because it can help with budgeting, time management, dietary restrictions, portion control, and decision-making. 

How Many Pizzas For 20 People?

After shedding light on the significance of knowing how many pizzas for 20 people, this post offers practical guidance for those looking to tackle this problem. 

The number of pizzas needed for 20 people will depend on several factors such as pizza size, individual appetite, and other food options available. However, a general rule of thumb is adults usually eat about 3 slices of pizza per meal.

This means for a group of 20 people, you would need approximately 8 large pizzas (14-inch). Of course, this can vary depending on the specific factors mentioned above, so it’s always best to plan and order accordingly.

More specifically, you can refer to the calculation formulas below. 

Total number of slices needed: 3 slices per person x 20 people = 60 slices (Apply the 3/8 pizza rule)

Number of large pizzas needed (14-inch): 60 slices/ 8 slices per pizza = 7.5 pizzas (round up to get 8 pizzas)

As such, by doing some simple calculations, you can make a more accurate estimate and avoid any potential pizza-related mishaps.

Note: While the 3/8 pizza rule is a popular guideline for sharing pizzas among adults, there are exceptions to consider when it comes to children. Younger kids typically have smaller appetites and may not be able to finish a 3/8 portion of a large pizza on their own.

In this case, it may be more appropriate to give children a slightly larger portion of the pizza, perhaps around 2/8 instead of 3/8. Alternatively, you could consider ordering a small pizza specifically for the kids to ensure they have an appropriate amount to eat.

The 3/8 Pizza Rule

The 3/8 pizza rule is a well-known concept in the world of pizza lovers. According to this rule, each person should be allotted 3/8 of a large pizza or half a medium pizza when sharing with others.

But have you ever wondered where this rule came from?

There are several theories surrounding the origin of the 3/8 pizza rule. Some believe that it originated from the typical size of a personal pizza, which is usually around 6-8 inches in diameter.

This would mean that if you were to cut a large pizza into eight slices, each person would receive a portion equivalent to a personal pizza.

Another theory suggests that pizzerias popularized this rule as a way to standardize pizza sizes and make it easier for customers to order.

Instead of specifying the number of slices or the size of the pizza, they could refer to the 3/8 rule. Interestingly, there are also cultural factors that may have influenced the 3/8 pizza rule.

In Italy, where pizza originated from, it is common to share a large pizza among multiple people by cutting it into small slices. This is often the norm in many European countries.

On the other hand, in the United States, larger pizza sizes are more common, and sharing a large pizza with just one or two people may seem excessive.

This could explain why the 3/8 rule has become popularized in America to divide up a larger pizza among a group of people.

Regardless of its origins, the 3/8 pizza rule has become a well-known concept and is often used as a guideline for sharing pizzas among friends or family.

Of course, it’s ultimately up to personal preference and appetite – some may prefer more than 3/8 while others may be satisfied with less.

But next time you’re sharing a pizza with others, you’ll now have a bit of background knowledge on why the 3/8 rule may be used.

How Many Pizzas For 20 People – Different Brands?

Besides determining the number of pizzas needed to serve 20 people, choosing the pizza brand to order is also important to the success of the event. Each pizza brand has its characteristics and taste, which can greatly affect the satisfaction of your guests. 

Below we recommend some famous pizza brands including Pizza Hut, Domino’s, Papa John’s, and Costco.

Pizzas For 20 People – Domino’s Pizza

As one of the most popular pizza chains, Domino’s offers a variety of sizes and toppings that can cater to different appetites. 

For 20 people, you can go for 8 large pizzas with different toppings, or order a mix of medium and large pizzas depending on the preferences of your guests (if each pizza is cut into 8 slices). 

Keep in mind that you can always ask them if they have any dietary restrictions or preferences before placing the order. Moreover, you can also consider ordering a few sides like garlic bread or chicken wings to complement the pizzas and ensure that everyone has enough to eat.

Pizzas For 20 People – Pizza Hut Pizza

Another well-known pizza brand, Pizza Hut, also offers a range of sizes and toppings to choose from. For 20 people, you can order 6 large pizzas with different toppings or go for a mix of medium and personal pan pizzas (if each pizza is cut into 10 slices). 

Don’t forget to consider the sides like breadsticks or pasta that Pizza Hut offers as well. This can add variety to the menu and cater to diverse taste preferences.

Pizzas For 20 People – Papa John’s Pizza

If you are a fan of Papa John’s, then you’ll be happy to know that for 20 people, you can order around 6 to 8 large pizzas with different toppings. You can also consider ordering their specialty pizzas like “The Works” or “Super Hawaiian” to add some excitement to the menu. 

Pizzas For 20 People – Costco Pizza

Lastly, let’s not forget about the giant pizzas from Costco. With sizes ranging from 18 inches to 30 inches, four or five of these massive pizzas can easily feed 20 people (if each pizza is cut into 12 slices). 

Additionally, Costco offers a variety of toppings such as pepperoni, combo, and BBQ chicken to choose from. And if you have any vegetarians in the group, Costco also offers a veggie pizza option. 

Keep in mind that these giant pizzas may take longer to cook, so it’s best to call ahead and place your order.

What Pizza Size Should We Order For a Group Of 20 Members?

When it comes to ordering pizza for a group of 20 people, one of the most important considerations is the size of the pizzas. This will greatly affect the number of pizzas needed to satisfy everyone’s hunger.

Pizza sizes can vary among different brands, with some offering smaller sizes while others have larger options. It is important to check the size and serving recommendations for each brand before placing an order.

As a general rule, a large pizza can feed approximately 2 to 3 people, while an extra-large pizza can serve 4 to 5 people. 

For a group of 20 people, this means ordering at least 8 large pizzas or 5 extra-large pizzas to ensure everyone is well-fed.

What Factors Affect The Number Of Pizzas Ordered For 20 People?

Size isn’t the only factor to consider when addressing the question of how many pizzas for 20 people. To organize an event that pleases all diners, planners need to consider other factors such as guest appetite, dietary constraints, and other foods.

Size Of The Pizza

The size of the pizza is one of the major factors that affects the number of pizzas ordered for a group of 20 people. 

Generally, larger pizzas have more slices, which means they can feed more people. This leads to a higher number of pizzas being ordered for a large group.

Guest Appetite

The appetites of the guests can also affect the number of pizzas ordered. If the group consists of big eaters, they may order more pizzas to satisfy their hunger. 

On the other hand, if the group is composed of smaller eaters or individuals with dietary restrictions, the number of pizzas ordered may be lower.

Dietary Constraints

The dietary constraints of the group can also impact the number of pizzas ordered. If there are vegetarians or individuals with food allergies in the group, this may affect the types of pizzas ordered and subsequently, the overall quantity.

Other Foods

In addition to the factors listed above, the presence of other food options can also affect the number of pizzas ordered for a group of 20 people. 

If there are other appetizers or main dishes available, individuals may opt for smaller portions of pizza. However, if pizza is the main and only option, there may be a higher demand for more pizzas.

Some Useful Tips For Ordering Pizzas For 20 People

In addition to considering the factors involved in ordering the right number of pizzas for 20 people, we also offer some tips to make your ordering process as easy as possible.

1. Plan aheadDon’t wait until the last minute to order your pizzas. It’s important to give the restaurant enough time to prepare and deliver your order, especially for a large group. Aim to place your order at least 24 hours in advance.

2. Know your group’s preferencesBefore placing your order, find out if anyone has any specific dietary restrictions or allergies. This will ensure that everyone can enjoy their pizza without any concerns.

3. Order in bulkMany pizza places offer discounts when you order in bulk. Take advantage of these deals to save some money when ordering for a large group.

4. Don’t forget the sidesWhile pizzas are the main attraction, don’t forget to order some sides such as garlic bread, wings, or salad to round out the meal.

5. Keep track of your orderWhen placing a large order, it’s important to keep track of what you’ve ordered to avoid any mistakes or missing items. Double-check with the restaurant to confirm your order before it’s delivered.

6. Don’t forget dessertAfter enjoying a delicious pizza meal, it’s always nice to have something sweet for dessert. Consider ordering some desserts such as brownies or cookies to satisfy everyone’s sweet tooth.


Now, you can probably solve the question “How many pizzas for 20 people?” with useful information about related factors and famous pizza brands. 

When planning to order pizzas for a group of 20 people, it’s important to consider factors such as pizza size, guest appetite, dietary constraints, and other food options because these things greatly affect customer satisfaction.

Remember to plan ahead, consider variety, and take advantage of any deals or discounts available. In addition, don’t forget to properly store and reheat any leftovers to enjoy another delicious pizza meal in the future. Happy ordering!

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