Jack in the Box Halfsies: nutrition and allergens
Jack in the Box lists the Halfsies in 2 sizes, from 390 calories (A la carte, 122 g) to 450 calories (In Munchie Meal, 140 g). The A la carte has 21 g fat, 46 g carbohydrate, 5 g protein and 810 mg sodium per serving (122 g).
Nutrition facts
| Per serving | A la carte | In Munchie Meal |
|---|---|---|
| Serving size | 122 g | 140 g |
| Calories | 390 | 450 |
| Calories from fat | 190 | 220 |
| Total fat (g) | 21 27% | 24 31% |
| Saturated fat (g) | 2 10% | 2 10% |
| Trans fat (g) | 0 | 0 |
| Cholesterol (mg) | 0 0% | 0 0% |
| Sodium (mg) | 810 35% | 930 40% |
| Potassium (mg) | 500 11% | 570 12% |
| Total carbohydrate (g) | 46 17% | 53 19% |
| Dietary fiber (g) | 4 14% | 4 14% |
| Total sugars (g) | 0 | 0 |
| Protein (g) | 5 10% | 5 10% |
Percentages are the share of the FDA Daily Value for adults and children 4 and over, worked out from Jack in the Box’s published amounts (how % Daily Value works). A dash means Jack in the Box does not publish that value for this size. Not published for this item: added sugars.
Using the FDA’s rule of thumb that 5% of the Daily Value or less per serving is low and 20% or more is high, the A la carte size is high in sodium (35%) and fat (27%) and is low in cholesterol. Add it up with other items in the Jack in the Box nutrition calculator.
Allergens
According to Jack in the Box, the Halfsies contains wheat.
| Milk | Not listed |
|---|---|
| Egg | Not listed |
| Fish | Not listed |
| Crustacean shellfish | Not listed |
| Tree nuts | Not listed |
| Peanuts | Not listed |
| Wheat | Contains |
| Soy | Not listed |
| Sesame | Not listed |
Jack in the Box kitchens handle soy, egg, fish, milk, wheat and sesame, and shared equipment means an item can pick up one of these even when its ingredients do not list it. Grilled vegetables, eggs and some bakery items are cooked with a butter-flavored vegetable oil that adds soy. The allergen guide does not cover dressings, crunchy toppings, dipping sauces or sauce packets within other items; those are listed on their own. Guests with food allergies are advised to consult their physician and to recheck the information often, since menus and ingredients change.
Other items in Jack's Munchie Meals at Jack in the Box
By calories (A la carte), the Halfsies ranks 3 of 3 in Jack in the Box’s Jack's Munchie Meals section, from lowest to highest.
| Item | Calories |
|---|---|
| Onion Rings (4 pc) | 220 |
| Two Tacos | 350 |
| HalfsiesA la carte | 390 |
Nutrition for all 3 items in Jack's Munchie Meals at Jack in the Box
Browse the Jack in the Box menu by goal: high-protein items · low-calorie items
Sources
- 1 Jack in the Box, 2026 Nutrition Facts (Jack in the Box nutrition guide) Covers nutrition, allergens and menu · Printed as "effective as of November 2026" · Checked 8 Oct 2026
- 2 Jack in the Box, Allergens Reference Guide Covers allergens · Checked 8 Oct 2026
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