How Many Slices in a Large Costco Pizza?

When it comes to satisfying your pizza cravings, Costco is a popular choice for many. With its large-sized pizzas and affordable prices, it’s no wonder that people flock to Costco food courts for a delicious and budget-friendly meal. If you’ve ever wondered how many slices are in a large Costco pizza, you’ve come to the right place. In this article, we will explore the dimensions of a large Costco pizza and calculate the number of slices you can expect to enjoy.

Understanding Costco Pizza Sizes

Costco is known for offering pizzas in different sizes, including small, medium, and large. While the specific dimensions may vary slightly between locations, a large Costco pizza typically measures around 18 inches in diameter. The large size is perfect for sharing with friends or feeding a hungry crowd.

Determining the Number of Slices in a Large Costco Pizza

Size of a Large Costco Pizza

To calculate the number of slices in a large Costco pizza, we need to consider the standard slice size and the diameter of the pizza itself. As mentioned earlier, a large Costco pizza has an approximate diameter of 18 inches. However, it’s essential to note that the exact size may vary slightly.

Standard Slice Size

In most cases, a standard pizza slice is cut in a triangular shape. Each slice is typically wide at the crust and tapers down to a point at the tip. The width of a standard slice is approximately 1.5 inches at the crust.

Calculation of Slices in a Large Costco Pizza

To calculate the number of slices in a large Costco pizza, we divide the circumference of the pizza by the width of a standard slice. The formula can be expressed as:

Number of Slices = Circumference of Pizza / Width of Standard Slice

For an 18-inch pizza with a standard slice width of 1.5 inches, the calculation would be as follows:

Number of Slices = 18 inches * π (pi) / 1.5 inches

Using the approximate value of pi as 3.14, the calculation simplifies to:

Number of Slices ≈ 56.52 slices

Therefore, you can expect to have around 56 to 57 slices in a large Costco pizza.

Factors That Can Affect the Number of Slices

While the calculation above provides a general estimate, it’s important to consider that several factors can affect the actual number of slices in a large Costco pizza.

Crust Thickness

The thickness of the pizza crust can impact the number of slices. If the crust is thicker than usual, the width of each slice may increase, resulting in fewer total slices. On the other hand, a thinner crust may allow for more slices.

Toppings and Ingredients

The choice of toppings and ingredients can also influence the number of slices. If the pizza is loaded with a variety of toppings, such as meats, vegetables, or extra cheese, the overall weight and thickness of the pizza may increase. This could potentially affect the number of slices you can obtain from a large Costco pizza.

Comparing Costco Pizza to Other Pizzas

When it comes to pizza, size and slice count can vary across different pizza chains. Let’s compare the number of slices in a large Costco pizza to some popular pizza chains:

  • Pizza Hut: A large Pizza Hut pizza typically has around 8 slices.
  • Domino’s Pizza: A large Domino’s pizza generally comes with 8 slices.
  • Papa John’s: A large Papa John’s pizza also offers 8 slices.

As you can see, a large Costco pizza provides significantly more slices compared to other popular pizza chains, making it an excellent choice for larger gatherings or events.


In conclusion, a large Costco pizza is approximately 18 inches in diameter and can be divided into approximately 56 to 57 slices. However, factors like crust thickness and toppings can affect the exact number of slices you will get. Costco’s generous portion sizes and competitive pricing make their pizzas a crowd-pleasing option. So, the next time you’re at Costco, you can confidently plan your meal knowing how many slices to expect from a large pizza.

Frequently Asked Questions (FAQs)

Q1. How much does a large Costco pizza cost?

The price of a large Costco pizza may vary slightly depending on your location. However, as of our knowledge cutoff in September 2021, a large cheese pizza from Costco typically costs around $9.99.

Q2. Can you order a custom pizza at Costco?

No, Costco offers pre-made pizzas with fixed toppings. However, you can choose from a variety of toppings, including pepperoni, cheese, and combination pizzas.

Q3. Are Costco pizzas available for delivery?

No, Costco pizzas are generally not available for delivery. They are typically sold in-store at their food courts and cannot be ordered online for delivery.

Q4. Can I freeze leftover slices of a Costco pizza?

Yes, you can freeze leftover slices of a Costco pizza. Ensure the slices are properly wrapped or stored in an airtight container before placing them in the freezer. Frozen pizza slices can be reheated in the oven or microwave when you’re ready to enjoy them.

Q5. Are there any vegetarian options for Costco pizzas?

Yes, Costco offers vegetarian options for their pizzas. In addition to classic cheese pizza, you can also find pizzas with vegetable toppings like mushrooms, onions, peppers, and olives.

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