Jack in the Box Jr. Jumbo Jack
The classic Jumbo Jack flavor in a smaller, more snackable size. It features a seasoned beef patty topped with lettuce, tomato, pickles, chopped onions, and mayonnaise on a toasted bun.
Based on a standard 2,000 calorie daily limit.
Recommended limit: 2,300mg per day.
Target: 50g protein per day for maintenance.
Macro Nutrient Density
Smart Nutrition Hack
Hold the Mayo for 100 Calories
The mayonnaise on a Jr. Jumbo Jack adds 10-12g of fat and about 100 calories. By asking to hold the mayo and using mustard instead, you can drop the calories to 300 while keeping all the flavor!
Burn It Off
400 Calories Breakdown
*Activity estimates are calculated based on an average 155 lb adult. Individual results vary.
Allergens & Details
Contains Allergens
Buns contain sesame in some regions.
Frequently Asked Questions
What is the difference between a Jumbo Jack and a Jr. Jumbo Jack?
The Jr. Jumbo Jack is smaller (151g vs approx 240g) and contains roughly 400 calories compared to the full-size Jumbo Jack which has significantly more.
Is there a Jr. Jumbo Jack with cheese?
Yes, you can add a slice of American cheese, which typically adds about 40-50 calories and 3g of saturated fat.
* The % Daily Value (DV) tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.