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Cheeseburger (mustard & ketchup) & Diet Coke

Cheeseburger (mustard & ketchup) & Diet Coke at In-N-Out Burger has 400 calories, 22g protein, 41g carbs and 18g fat — sourced from In-N-Out Burger Nutrition Facts, not AI guesses. Single beef patty, one slice American cheese, lettuce, tomato, onion, mustard and ketchup - no spread - on bun; paired with a Diet Coke (0 cal) for a lean classic-burger meal.

Cheeseburger (mustard & ketchup) & Diet Coke
400calories
22gprotein
41gcarbs
18gfat
Low cal Contains dairy, gluten
Unlock exact macros — free in the MacroBite app

At In-N-Out Burger, the Cheeseburger (mustard & ketchup) & Diet Coke is light on calories. That works out to 5.5g of protein per 100 calories — 3g below the 25g In-N-Out Burger average. Its macros land at roughly 22% of calories from protein, 41% from carbs and 41% from fat. Contains dairy, gluten.

Source: In-N-Out Burger Nutrition Facts ↗, last verified Jun 17, 2026. Menus change periodically; values may vary by location. How we verify →

See all 17 In-N-Out Burger meals →  ·  Highest-protein In-N-Out Burger meals →  ·  In-N-Out Burger nutrition calculator →

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Cheeseburger (mustard & ketchup) & Diet Coke — common questions

How much protein is in the Cheeseburger (mustard & ketchup) & Diet Coke at In-N-Out Burger?
The Cheeseburger (mustard & ketchup) & Diet Coke has 22g of protein. It also has 400 calories, 41g carbs and 18g fat, per In-N-Out Burger Nutrition Facts.
How many calories are in the Cheeseburger (mustard & ketchup) & Diet Coke?
The Cheeseburger (mustard & ketchup) & Diet Coke at In-N-Out Burger has 400 calories, according to In-N-Out Burger Nutrition Facts.
Is the Cheeseburger (mustard & ketchup) & Diet Coke good for weight loss?
At 400 calories it's one of the lighter options at In-N-Out Burger, with 22g of protein to help you stay full.
Does the Cheeseburger (mustard & ketchup) & Diet Coke contain allergens?
Per In-N-Out Burger Nutrition Facts, the Cheeseburger (mustard & ketchup) & Diet Coke contains dairy, gluten. Preparation and cross-contact vary by location — check with the restaurant if you have an allergy.
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