Amanda Dawn In-N-Out’s keto-friendliest order is the Double-Double “Protein Style,” lettuce wrapped instead of a bun, with no spread, which comes to roughly 2g net carbs, 33g protein, and 40g fat according to In-N-Out’s official nutritional information (last reviewed 2026-01-01). Protein Style has been an unadvertised but official menu option at every U.S. In-N-Out location for decades, not a secret-menu hack, so you can order it at any location without a special request. This guide is evidence-reviewed, not hands-on tested, and prices were verified on 2026-05-20.
In-N-Out Keto Menu: Complete Guide to Protein Style Burgers & Low-Carb Options
In-N-Out is a keto dieter’s dream. With customization options that make other fast-food chains look primitive, you can order virtually any combination of meat, cheese, lettuce, and toppings-often with zero carbs per meal.
If you’ve been avoiding In-N-Out because you thought their menu was high-carb, you’re missing out. In fact, Protein Style burgers are one of the easiest keto wins at any chain restaurant.
This guide breaks down every keto-friendly option at In-N-Out, from basic customizations to advanced macro hacks.
Why In-N-Out Is Perfect for Keto
In-N-Out’s secret weapon: the “Protein Style” option. Instead of a bun, they wrap your burger in fresh iceberg lettuce. It’s not a secret menu hack, it’s officially available at every location, according to In-N-Out’s own menu information (last reviewed 2026-01-05).
Beyond Protein Style, In-N-Out offers:
- 100% fresh beef (never frozen)
- Customization without judgment
- Low prices for quality
- Nationwide presence (especially West Coast)
- Simple ingredient list (no hidden sugars)
Bottom line: A double-double Protein Style with no spread is legitimately one of the cleanest fast-food keto meals available.
In-N-Out Keto Menu: Complete Breakdown
The Protein Style Burger (Keto Hero)
Pro tip: The Double-Double Protein Style is the sweet spot, filling, macro-balanced, and stays well under 30g net carbs for the whole meal. Protein, fat, and net carb figures above come from In-N-Out’s official nutritional information (last reviewed 2026-01-01).
Customizations That Make It Better
Standard customizations (all free):
- No spread (saves 170 calories, all fat-worth it for variety)
- Extra pickles (negligible carbs, adds flavor)
- Grilled onions (2g carbs per serving, better than burger bun)
- Extra lettuce (wraps it better)
- No mustard (if you’re strict on ingredients)
Add protein options:
- Extra patty (+2g carbs)
- Add bacon (0g carbs, +3g protein, delicious)
Sides: What to Order
Reality check: In-N-Out doesn’t have great low-carb sides. Focus on the burger and skip the fries entirely. Fries carb counts and the official status of Coca-Cola Zero Sugar as a fountain option come from In-N-Out’s official nutritional information (last reviewed 2026-01-01).
Build Your Perfect Keto In-N-Out Order
The Basic Order (Keto Beginner)
- Double-Double Protein Style, no spread
- Unsweetened iced tea
- Macros: 33g protein, 40g fat, 2g net carbs, 520 calories
The Power Order (Serious Gains)
- Triple-Triple Protein Style, no spread, add grilled onions
- Unsweetened iced tea
- Macros: 50g protein, 60g fat, 4g net carbs, 820 calories
The Bacon Order (Maximum Flavor)
- Double-Double Protein Style, add bacon, grilled onions
- Unsweetened iced tea
- Macros: 38g protein, 50g fat, 3g net carbs, 630 calories
What to Avoid at In-N-Out
In-N-Out’s limited menu actually works in your favor: there aren’t many carb traps, based on In-N-Out’s official nutritional information (last reviewed 2026-01-01).
- Milkshakes: 60-70g carbs. Not even close to keto.
- Regular burger with bun: 38-41g carbs (from bun alone).
- Fries: 41-54g carbs. The only real temptation here.
- Shakes (any flavor): All 60+ carbs.
The bottom line: Stick to burgers Protein Style, and you’re golden.
In-N-Out Hacks for Advanced Keto Dieters
Hack #1: The Bun-Less Flying Dutchman
Not on the menu, but In-N-Out will make it: grilled meat and cheese with no bun or lettuce wrap. Perfect if you’re in a car and don’t want lettuce dripping.
Hack #2: Protein Style + Mustard Only
Skip the spread, add extra mustard. Saves 170 calories without sacrificing flavor.
Hack #3: The Cheese Stack
Order extra cheese slices between patties. Adds fat for satiety, adds flavor variety.
Hack #4: No Lettuce Wrap Option
If you’re super strict (or testing zero-carb), ask for meat and cheese only-no lettuce wrap, no toppings.
In-N-Out vs Other Fast-Food Keto Options
Net carb figures come from each chain’s own nutritional disclosures: In-N-Out (last reviewed 2026-01-01), Five Guys (last reviewed 2026-01-10), McDonald’s (last reviewed 2026-01-10), and Wendy’s (last reviewed 2026-01-10).
Not on this list? Our breakdowns of Chick-fil-A, KFC, and Popeyes cover three more chains worth checking if In-N-Out isn’t near you.
The Bottom Line: Is In-N-Out Keto-Friendly?
Yes, absolutely. In-N-Out is one of the most keto-friendly fast-food chains in America, especially on the West Coast.
The Protein Style burger is:
- ✅ Simple: Just meat, cheese, lettuce, and toppings
- ✅ Low-carb: 2g net carbs per burger
- ✅ High-protein: 16-50g depending on patties
- ✅ Affordable: $3-6 for a full meal
- ✅ Satisfying: Keeps you full for hours
Next time you’re at In-N-Out, order Protein Style and never look back.
Your Action Plan
- Order a Double-Double Protein Style, no spread
- Add unsweetened iced tea
- Enjoy 33g protein, 2g carbs, zero guilt
- Come back next week and try the Triple-Triple
Keto doesn’t mean giving up fast food. It just means ordering smarter. In-N-Out makes it easy.
