How Many Pizza's Should I Order for 20 People? (2024)

Do you need help determining how many pizzas to order for your social group of 20 people or more? Knowing how much pizza for 20 people is enough to fill everyone's belly and provide a solid meal can be challenging. You want to make sure that there is enough to go around, but of course, you also want to make sure that you don't have an extreme excess that ends up going to waste.

There are several important factors to take into consideration when determining how much pizza for 20 people is appropriate. These elements include what kind of gathering you are serving food at, what time of day the gathering is taking place, whether all of the people are adults or if there will be children present, and more. And, of course, things like dietary restrictions or personal preference can come into play as well. It's easy to see why people search for the answer to this question online so frequently. Figuring out how many pizzas to order for 20 people can get complicated fast.

Luckily, here with our pizzacatering, we're pros when it comes to figuring out the right amount of food to order for a party or event. Keep reading to learn the answer below, along with other helpful serving tips for big groups.

Figuring Out How Much Pizza to Order

We'll get right down it and give you the answer immediately. For 20 adults you should order 8 large pizzas. This may seem like an arbitrary number, but there's actually a pizza ordering formula that can help you figure out the proper amount to order for any size group.

When serving adults at a regular mealtime, go by what is known as the 3/8 pizza rule. This rule assumes that a large pizza is cut into 8 slices, and to figure out how much pizza for 20 people you simply multiply 20 x (3/8). If you are solving the equation for a different size group, simply change out the first number before completing the math. For example, if you need to know how much pizza to order for 16 people, complete 16 x (3/8).

You may get a fraction as the final result when completing the math. If this is the case, it's always best to round the final number up. For example, if the result is 7.88, round up to get 8 pies. It's always better to have a tiny bit extra than to leave people hungry.

Where Does the 3/8 Pizza Rule Originate?

You may be wondering why to multiply the size of your group by 3/8. The answer is fairly straightforward. When serving a large group, it's fair to assume that some people will eat more than others. Some people may have just one slice of pizza, or perhaps not eat at all. Others may be very hungry and consume 3+ pieces of pizza.

The 3/8 pizza rule assigns an average number of slices per person, assuming that on average each person will eat three out of the eight slices in any given pie, with a generous cushion for wiggle room.

Exceptions to the Rule

Of course, there are exceptions to the 3/8 pizza rule that may impact how much pizza for 20 people is necessary at a specific event. For example, if a portion of your guests will be children it's safe to assume that they will not likely eat as much as adults. They have smaller bellies, after all. When adjusting for kids at events, turn the 3/8 pizza rule into the 2-slice rule and account for two slices of pie per child. Keep the 3-slice rule per adult, and add the two numbers of slices together before dividing by 8.

Next, think about what time of day your event or party is taking place, as well as what guests will be doing immediately before and after. For example, is your gathering around dinner time when adults will need to come directly from work before stopping anywhere else? If so, they're likely to be hungrier and consume more pizza. Ordering up may be the way to go if this is the case. Or, is the gathering at an odd time, such as the middle of the morning when people are likely to have been at home right before their arrival? If this is the case it may be safer to round down and go a little light on the number of pies.

Order Hungry Howie's® for Your Next Event

If you're having a party, large meeting, or any other event and need to feed a big group of people, Hungry Howie's® pizza is the way to go. We have vegetarian options, menu items for meat lovers, salads, subs, pasta, and so much more in addition to our beloved pies. There's something for everyone on the list! Additionally, we have desserts, soft drinks, and of course all of the plates and utensils you'll need for the complete serving package.

Place your order for Hungry Howie's® catering today and we'll be sure to satisfy all your guests with delicious pizza and more!

How Many Pizza's Should I Order for 20 People? (2024)

FAQs

How Many Pizza's Should I Order for 20 People? ›

Number of Guests multiplied by 3 ( avg. slices a person eats) then divide that by 8 (avg slices on a large pizza) = how many pizzas you should order. Example: 20 guests X 3 slices each = 60 slices of pizza

slices of pizza
Pizza by the slice is pizza sold in individual portions as a fast food by a restaurant or street vendor. Some restaurants and pizza stands only sell pizza by the slice, while others sell both slices and whole pizzas.
https://en.wikipedia.org › wiki › Pizza_by_the_slice
. Divide 60 slices into 18 and you get 7.5, so you should order 8 pizzas.

How many pizzas to feed 20 people? ›

For 20 adults you should order 8 large pizzas. This may seem like an arbitrary number, but there's actually a pizza ordering formula that can help you figure out the proper amount to order for any size group. When serving adults at a regular mealtime, go by what is known as the 3/8 pizza rule.

How much pizza should I order for 15 adults? ›

If you're trying to feed less than that, say around three to four people, save money by ordering two large pizzas. Let's look at another scenario — if you're trying to feed 15 people, you'll want around 45 slices. That means you can order eight medium-sized pizzas or six large pizzas.

How many slices are in a 20 pizza? ›

Large pizzas run about 14 inches in diameter and serve 10 slices. A large pizza is perhaps one of the most popular choices for game nights or laid-back evenings at home. Extra-large pizzas have a 16 to 20-inch diameter and yield 12 slices.

Is 3 large pizzas enough for 10 people? ›

4 pizzas for large appetites or if there is no other food. Generally, you want to have, at least, 2 pieces for each person. For 10 people, I would probably go with 3 medium-sized, or large even, pizzas! 3 to 5 large size pizzas would be enough!

How many slices of pizza do I need to feed 25 people? ›

The formula we use to estimate the number of pizzas required for large groups is: 2.5 slices per person divided by 8 slices per large pizza.

How many people does 1 large Pizza Hut pizza feed? ›

Most large pizzeria pizzas, measuring 14 to 16 inches in diameter, feed approximately four to eight people, depending on how many slices each person eats. Large pizzas typically contain eight to 12 triangular slices or 10 to 12 square slices.

What is the 3 8 pizza rule? ›

Here's the reasoning behind that rule: Most medium pizzas are cut into eight slices unless otherwise requested. Therefore, each slice comprises 1/8 of the pizza. Since the average hungry person eats three slices of pizza, it follows that you must simply multiply the number of guests by 3/8.

How many pieces of pizza would be needed to feed 18 people? ›

It depends on how many slices you'd like to feed each person. If it were me, I would order six pizzas and request they cut the pizza into 6 slices, so each person could have two larger-than-normal slices. If you want each person to have three slices, get nine pizzas and cut them into six slices each.

How much does a 16 inch pizza feed? ›

How Many 16-inch Pizzas Should I Order? It's a safe bet that a single 16-inch pizza will serve five adults. Depending on the size of each slice, that will mean anywhere from one to three pieces of pizza per person. If you're serving a crowd of 20 people, it's a good idea to order four of these x-large pizzas.

How many slices of pizza should I order per person? ›

Three slices per adult and two slices per child offer a good base to start from when you're estimating how many pizzas to order. If you know in advance that you have guests with major pizza appetites, allow for one or two more slices per person, just to be safe.

How much bigger is a 20 pizza than a 16? ›

A problem of scaling
Diameter [in]Area [in2]Diameter [cm]
1620140.6
1825445.7
2031450.8
2238055.9
4 more rows
Jul 28, 2024

How many 10 inch pizzas in a 20 inch pizza? ›

Since 10 squared is 4 times larger than 5 squared, the area of the larger pizza is four times that of the smaller one. The 20-inch pizza is therefore twice the size of the two 10-inch pizzas. This can be visualized in a graphic that shows two smaller pizzas placed next to each other and on top of the larger one: Home.

How many pizzas for 20 people? ›

How much pizza to order or bake
Number of peopleNumber of pizzas needed
208
2510
3012
4015
4 more rows
Oct 10, 2023

How to figure out how much pizza to order for a party? ›

The Pizza Formula

Thus, the number of pizzas p you should order is equal to 3 times the number of guests a, divided by 8. This works for any style of pizza. Even the experts at Green Lantern Pizza suggest a ratio of 3/8 is ideal for ordering so that even the last one to arrive isn't left sliceless!

How many Costco pizzas for 30 people? ›

Costco pizzas are cut into either 6 regular(big) slices or 12 smaller slices. Let's say that each person is really hungry and wants to eat two big slices. One pizza would feed 3 people(if all three eat 2 slices each.) 10 pizzas would feed 30 people IF everyone ate two big slices.

How many people does 1 party pizza feed? ›

Party Pizza

This is a very large pizza, sometimes 18 inches or more in diameter, and is designed for larger gatherings. It can serve six or more people.

How many pizzas for 22 kids? ›

The good news is that there's a magical equation for figuring out exactly how many pizzas you'll need: For kids ages five and below, you should order one slice per child. For kids ages 5 and up, you should order 2 extra slices for every 6 kids. If you plan on feeding the parents, you should order 1.8 times more pizza.

How many people does 18 inch pizza feed? ›

An Extra Large 16″ inch Pizza is normally cut into 6 or 12 slices and serves 5-6 people. An 18″ inch Pizza is normally cut into 6 or 12 slices and serves 6-7 people.

How many slices are in a 15 inch pizza? ›

Slice to Pizza Size Ratio

Small Pizza: 8-10 inch pizza with 6 slices. Medium Pizza: 12-14 inch pizza with 8 slices. Large Pizza: 14-16 inch pizza with 8 slices. Extra-large Pizza: 16-18 inch pizza with 8-10 slices.

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