What is the nutrition facts of a protein style In-N-Out Burger?

November 12, 2025 •

3 min read

By replacing the bun with lettuce, In-N-Out's "Protein Style" option significantly lowers the carbohydrate and calorie count of their classic burgers. For those seeking a healthier or low-carb alternative, understanding what is the nutrition facts of a protein style In-N-Out Burger is crucial for making informed choices.

Quick Summary

This article details the nutrition facts for In-N-Out's Protein Style hamburgers, cheeseburgers, and Double-Doubles, highlighting their caloric and macronutrient breakdowns.

Key Points

Low-Carb Solution: The Protein Style option replaces the bun with a lettuce wrap, making it a significantly lower-carb choice suitable for keto diets.
Calorie Savings: A Protein Style hamburger contains only 240 calories, a notable reduction from the 390 calories in a regular hamburger with a bun.
High-Protein Option: A Protein Style Double-Double packs 30g of protein while containing 450 calories, making it a high-protein, lower-carb alternative.
Sodium Content: Be mindful of sodium, as even protein-style options can be high, especially with multiple patties. A Double-Double Protein Style contains 1380mg of sodium.
Customizable for Your Needs: Modifications like Animal Style or replacing spread with mustard allow for further tailoring of calories and macronutrients.
Balanced Macros: The Protein Style burgers offer a good balance of fat and protein, with drastically reduced carbs, appealing to specific dietary goals.

Protein Style Hamburger Nutrition Facts

A Protein Style hamburger contains 240 calories, compared to 390 for the standard bun-based version. This reduction is primarily due to the removal of the bun. The nutritional breakdown includes 17g of fat, 11g of total carbohydrates (8g net carbs), and 13g of protein. It also contains 370mg of sodium. This burger consists of a beef patty, lettuce, tomato, onion, and spread.

Protein Style Cheeseburger Nutrition Facts

Adding cheese to the Protein Style burger increases the calories slightly to 270, compared to 430 for the regular cheeseburger. The Protein Style cheeseburger contains 19g of fat, 10g of total carbohydrates (8g net carbs), and 16g of protein. It has a higher sodium content at 800mg.

Protein Style Double-Double Nutrition Facts

For a more substantial, high-protein meal, the Protein Style Double-Double features two patties and two slices of cheese. It contains 450 calories, compared to 670 for the standard Double-Double. This option provides 32g of fat, 12g of total carbohydrates (10g net carbs), and a significant 30g of protein. The sodium content is 1380mg.

How Going "Protein Style" Changes Your Meal

Opting for Protein Style dramatically reduces carbohydrates and calories. For a hamburger, this change cuts carbs by approximately 70% and calories by 38%. While retaining the core flavors, the lettuce wrap provides a different texture and can be messier to eat.

Nutritional Comparison: Regular vs. Protein Style

Below is a comparison of the nutrition facts for In-N-Out burgers, contrasting the regular version with the Protein Style variation based on the official In-N-Out nutrition information.


Nutrient	Hamburger (Regular)	Hamburger (Protein Style)	Cheeseburger (Regular)	Cheeseburger (Protein Style)	Double-Double (Regular)	Double-Double (Protein Style)
Calories	390	240	430	270	670	450
Total Fat	21g	17g	25g	19g	41g	32g
Saturated Fat	8g	4g	12g	8g	18g	15g
Trans Fat	0g	0g	0g	0g	0g	0g
Cholesterol	40mg	40mg	55mg	55mg	110mg	110mg
Sodium	660mg	370mg	1020mg	800mg	1660mg	1380mg
Total Carbs	37g	11g	39g	10g	39g	12g
Dietary Fiber	2g	3g	2g	2g	2g	2g
Sugars	10g	7g	11g	6g	11g	6g
Protein	16g	13g	19g	16g	34g	30g

Customizing Your Protein Style Burger

Further customizations can tailor your Protein Style burger:

"Animal Style": Adds grilled onions, extra spread, and mustard-fried patties, increasing calories, fat, and sodium. An Animal Style Protein Style Double-Double is approximately 670 calories, 41g fat, 39g carbs, and 37g protein.
Extra Veggies: Request extra lettuce and tomato for more fiber and volume.
No Spread: Removing the spread reduces calories and fat.
Mustard Instead of Spread: Substituting mustard saves about 80 calories on a single burger.

Conclusion

Choosing a Protein Style burger at In-N-Out is an effective way to lower carbohydrate and calorie intake while enjoying a satisfying meal. By replacing the bun with lettuce, even a Double-Double becomes a lighter option suitable for low-carb or keto diets. Always refer to the official In-N-Out Nutrition Info for the most current data.

Frequently Asked Questions

A Protein Style cheeseburger from In-N-Out contains approximately 270 calories. This is achieved by replacing the bun with lettuce.

Yes, In-N-Out's Protein Style burger is an excellent option for a keto diet. The lettuce wrap eliminates most carbohydrates, and a single-patty burger contains only 8g of net carbs.

The Protein Style version dramatically reduces calories and carbohydrates. For example, a regular hamburger has 37g of carbs and 390 calories, while the Protein Style version has 11g of carbs and 240 calories.

The Protein Style Double-Double contains a robust 30g of protein, making it a very filling and high-protein option for those watching their carb intake.

An Animal Style Protein Style burger includes chopped grilled onions, extra spread, and mustard-fried patties. The extra toppings increase the calorie, fat, and sodium content compared to the standard Protein Style option.

Yes, because the bun is replaced with lettuce, the Protein Style burger is a naturally gluten-free option. However, cross-contamination is a possibility in a fast-food setting.

In-N-Out's spread contains sugar, but in small amounts. For a strict keto diet, it is better to request mustard and ketchup or no spread to further reduce carbohydrate intake.