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Last updated: Aug 9, 2026
Jack in the Box

Classic Smashed Jack

Burgers & MorePopular

Jack in the Box Classic Smashed Jack is fat-leaning, with about 60% of macro calories from fat. Each serving has 720 calories, 26g protein, 46g carbs, and 48g fat, making it worth balancing with lower-fat items in the same meal.

1 Serving
Serving Size
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720
Calories
Per serving
26 g
Protein
46 g
Carbs
48 g
Fat

Nutrition Facts

Amount per serving

Calories720 kcal
% Daily Value*
Total Fat 48 g62%
Saturated Fat 18 g90%
Trans Fat 2.5 g—
Cholesterol 90 mg30%
Sodium 1,380 mg60%
Total Carbohydrate 46 g17%
Dietary Fiber 2 g7%
Total Sugars 7 g—
Protein 26 g52%
Vitamin A—
Vitamin C—
Vitamin D—
Calcium—
Iron—
Potassium—
Caffeine—

* The % Daily Value tells you how much a nutrient in a serving contributes to a daily diet.

Nutrition Breakdown

720
kcal
Protein26 g (14%)
Carbs46 g (26%)
Fat48 g (60%)
Estimated calorie contribution using 4 kcal/g for protein and carbohydrates and 9 kcal/g for fat.

Meal Planning Insights

Protein density3.6/10

14% of macro calories come from protein.

Satiety index10/10

Estimated from protein, fiber, calories, and fat balance.

Activity estimate180 min walk

About 72 minutes of running for these calories.

Key Nutrients

Protein 26 g52%
Fiber 2 g7%
Sodium 1,380 mg60%
Sugars 7 g—
Saturated Fat 18 g90%
How we calculate these values

Diet Compatibility

High protein3.6/10 protein density from 26g protein and 720 calories.No
Lower carb46g carbs per serving.No
Low fat48g total fat per serving.No
High sugar7g total sugars per serving.No
High sodium1,380mg sodium per serving.Yes
Vegetarian source flagNo vegetarian flag is published for this item.Not flagged

Similar Items in Burgers & More

View all
Bacon & Swiss Buttery Jack800 kcal · 34 g proteinBacon Double Smashed Jack1,120 kcal · 45 g proteinBacon Ultimate Cheeseburger930 kcal · 55 g protein

Compare with other items

Select up to 3 items to compare calories, protein, sodium, and macros.

Quick comparisons

Classic Smashed Jack has 680 more calories than American Cheese and 24g more protein. Compare

Classic Smashed Jack has 680 more calories than BBQ Sauce Dip Cup and 26g more protein. Compare

Compare with American Cheese

Classic Smashed Jack Compared With Nearby Items

Compared with Bacon & Swiss Buttery Jack, another Burgers & More item at Jack in the Box, Classic Smashed Jack has 80 fewer calories than it and 8g less protein than it. That makes this page useful for deciding between nearby menu choices, not just reading a raw nutrition label.

Data Source and Methodology

Nutrition values for Classic Smashed Jack are maintained in Nutrimetry from restaurant-published menu data and were last checked on Aug 9, 2026. Macro percentages use 4 calories per gram for protein and carbohydrates and 9 calories per gram for fat.

Read the data methodology

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