Jack in the Box Guide
Low Carb at Jack in the Box
The lowest-carb item at Jack in the Box is the Real Swiss Cheese, with 0g of carbs.
Low Carb Menu Items
| Item | Calories | Protein |
|---|---|---|
| Real Swiss Cheese | 70 | 5g |
| Mayonnaise | 80 | 0g |
| Diet Coke® | 5 | 0g |
| Provolone Cheese | 60 | 4g |
| American Cheese | 40 | 2g |
| Pride Margarine Spread | 20 | 0g |
| Mustard | 5 | 0g |
| Gold Peak® Fresh Brewed Iced Tea | 5 | 0g |
| Soy Sauce | 5 | 1g |
| Red Onions | 5 | 0g |
| Creamy Ranch Sauce | 80 | 0g |
| Swiss Style Cheese | 40 | 2g |
| Real Cheddar Cheese | 70 | 4g |
| Fire Roasted Salsa | 10 | 0g |
| Kona Classic® Coffee | 10 | 0g |
Across all 133 menu items we track at Jack in the Box, the median is about 360 calories and 13g of protein — so the low carb picks above are meaningfully different from a typical order, not just the default menu re-sorted.
Frequently Asked Questions
- What's the best low carb option at Jack in the Box?
- The lowest-carb item at Jack in the Box is the Real Swiss Cheese, with 0g of carbs.
- What else at Jack in the Box fits low carb?
- The Mayonnaise is another strong pick — 80 calories, 0g protein.
Nutrition data verified August 31, 2026.