What is 3 Patties at In-N-Out? Your Guide to the Secret 3x3 Burger

November 12, 2025 •

2 min read

The In-N-Out 3x3, also known as the Triple Triple, has three beef patties and three American cheese slices, making it popular for those with a serious appetite. Knowing what is 3 patties at In-N-Out is a rite of passage for burger fans.

Quick Summary

The In-N-Out 3x3 is a triple cheeseburger with three beef patties and three cheese slices from the secret menu. It's a hearty choice. Customizations like 'Animal Style' can enhance the order.

Key Points

Secret Menu Item: A 3x3 isn't on the official menu but is a custom order from In-N-Out's secret menu.
Triple Cheeseburger: It's shorthand for three beef patties and three slices of American cheese.
Easy Ordering: Simply ask for a "3x3".
Highly Customizable: Combine the 3x3 with "Animal Style" or "Protein Style".
Hearty Portion: This burger is larger than the Double-Double.
Registered Trademark: The '3x3' variation is a registered trademark of In-N-Out Burger.

Unlocking the 3x3: In-N-Out's Triple Patty Treasure

The 3x3 is one of In-N-Out's well-known "secret" menu items, perfect for fans who find the Double-Double a bit tame. The term '3x3' indicates three beef patties and three slices of American cheese. This burger has a meatier flavor profile. The terminology is the first step to unlocking this popular custom order.

How to Order Your 3x3 Like a Pro

Ordering the 3x3 is simple. Just tell the cashier, "I'd like a 3x3." Describing it as a "triple cheeseburger" also works. This is a common custom order, so employees are familiar with it. Other secret menu customizations can be added to your 3x3.

Customizing Your 3x3 Burger

The 3x3 can be customized. Here are a few popular ways to enhance the triple-patty experience:

Animal Style: Order the 3x3 "Animal Style" to get mustard-grilled patties, pickles, extra spread, and caramelized onions.
Protein Style: For a lower-carb option, request your 3x3 "Protein Style," where the bun is replaced with a lettuce wrap.
Mustard Grilled: The burger patties are grilled with mustard.
Extra Toast: Request the buns to be toasted longer.
Chopped Chilies: Add chopped cascabella peppers.

The Anatomy of a 3x3 Burger

The standard 3x3 is a triple cheeseburger with these components, although customization is possible:

Three beef patties: Fresh, never-frozen beef, cooked to order.
Three slices of American cheese: Melted over each patty.
Hand-leafed lettuce and tomato: Fresh vegetables.
Spread: The In-N-Out special sauce.
Onions: Raw, grilled, or a combination.
Toasted bun: A classic bun, lightly toasted.

3x3 vs. Other In-N-Out Favorites

Here is a comparison of some popular In-N-Out burger options:


Feature	Hamburger	Double-Double	3x3	4x4
Patties	1	2	3	4
Cheese Slices	1	2	3	4
Calories	Approx. 370	Approx. 670	Approx. 860	Approx. 1050 [Calculated]
Meal Type	Standard	Hearty	Very Hearty	Challenge
Secret Menu	No	No	Yes	Yes
Ordering Name	Hamburger	Double-Double	3x3 (or Triple Triple)	4x4 (or Quad Quad)
Ordering Simplicity	Very Simple	Very Simple	Easy	Easy

Conclusion

The 3x3 is more than a large burger; it shows In-N-Out's approach to customers. Knowing what is 3 patties at In-N-Out and how to order it, joins a community of enthusiasts who appreciate the quality and customization. The 3x3 is a delicious option for anyone. Order this secret menu item and enjoy the triple-decker goodness.

Frequently Asked Questions

Yes, the 3x3 is available at any In-N-Out restaurant. The secret menu is a consistent part of the brand's culture.

Pronounce it "three by three." 3x3 is the most common way to order this item.

Yes. You can order your 3x3 Protein Style, served in a lettuce wrap.

A 3x3 has approximately 860 calories.

Yes, In-N-Out accommodates up to four patties. Order a 4x4 (Quad Quad). Orders with more than four patties are typically not accommodated.

Yes, custom orders like this are possible. Specify a "3x2". Employees can also assist with custom cheese requests.

A standard 3x3 comes with lettuce, tomato, and In-N-Out's spread. You can add raw or grilled onions.