A Jack in the Box Breakfast Jack has 350 calories for the standard ham–egg–cheese sandwich on a bun.
The Breakfast Jack is a simple build: a freshly cracked egg, a slice of ham, and American cheese on a toasted bun. If you’re counting calories or tracking macros, knowing exactly what’s in this sandwich helps you plan the rest of your day. Jack in the Box’s menu pages list the Breakfast Jack at 350 calories, matching the current nutrition sheet.
Breakfast Jack Nutrition Facts (Standard Build)
Figures below reflect the current standard sandwich. Values come from Jack in the Box’s published data and may vary slightly by location.
| Component | Amount |
|---|---|
| Calories | 350 kcal |
| Total Fat | 18 g |
| Saturated Fat | 6 g |
| Trans Fat | 0 g |
| Cholesterol | 240 mg |
| Sodium | 840 mg |
| Total Carbohydrate | 30 g |
| Dietary Fiber | 1 g |
| Total Sugars | 4 g |
| Protein | 16 g |
| Serving Size | ~132 g (one sandwich) |
You can see the calorie line on many local menu pages for the Breakfast Jack (350 Cal). For a full one-page label with the rest of the breakfast lineup, check Jack in the Box’s 2024 Nutrition Facts PDF. Both links open in a new tab.
What Comes In A Breakfast Jack
Nothing fancy here, which is part of the appeal. The standard stack uses a regular bakery-style bun, one fried egg, a thin slice of ham, and a slice of American cheese. No sauces by default. That structure keeps prep fast and keeps the calorie count steady.
Bites vary by restaurant because griddle time, egg size, and bun toasting can shift a little. Those swings don’t move the calorie line much for the base sandwich, but add-ons will. Below you’ll find practical ways people tweak the Breakfast Jack and what those swaps tend to do.
Calories In A Breakfast Jack Sandwich: Real-World Scenarios
Swaps That Raise Calories
Extra cheese: One more slice bumps fat and sodium and nudges calories upward. It also softens the texture and adds richness.
Double meat: A second slice of ham adds lean protein with a smaller calorie bump than cheese, though sodium climbs.
Bacon instead of ham: The Bacon Breakfast Jack shows how this swap plays out. The count goes up versus the ham version, and the flavor gets smokier and saltier.
Sausage instead of ham: Sausage patties are denser. The Sausage Breakfast Jack carries a larger jump in calories with a meatier bite.
Swaps That Lower Calories
No cheese: Skipping the slice trims fat and sodium. The sandwich feels less creamy but still satisfying thanks to the warm egg.
No meat: Egg and cheese on a bun lands well below the standard calorie mark. Season with pepper or add hot sauce for pop.
No bun (eat open-face): If you have a knife and fork, leaving half the bun behind cuts a chunk of carbs and calories.
Small Adds That Don’t Change Much
Mustard, hot sauce, ketchup, or pickled jalapeños add bright flavor with a minimal calorie load when used lightly. These extras can keep the meal interesting without moving the needle.
Why You See Different Numbers Online
Search results sometimes show older entries like 280 or 410 calories. Menu recipes change over time, and third-party trackers may keep legacy numbers. Serving weights, bun varieties, and cheese types can change by market as well. When in doubt, rely on Jack in the Box’s current menu listing and the latest nutrition sheet, since those mirror what the kitchen builds today.
Macronutrients: What The Calories Come From
The Breakfast Jack skews balanced for a fast-food breakfast. Around half of the calories come from fat, with the rest split between carbs and protein. The 16 grams of protein come from the egg, the ham, and the cheese. Carbs sit at 30 grams because of the bun. Fiber is low at 1 gram, which is common for a white bun sandwich.
Salt is the bigger watch-item here: 840 milligrams in the base build. If you’re already planning fries or a salted coffee drink, that total climbs fast. Simple fix: pair the sandwich with black coffee or water and you keep the meal tidy.
Comparisons: Breakfast Jack Vs Other Morning Staples
Curious how the classic stack fits beside the rest of the breakfast board? Here’s a quick look using the same company sheet so you’re comparing apples to apples.
| Menu Item | Calories | Notes |
|---|---|---|
| Breakfast Jack (ham) | 350 | Standard egg + ham + American cheese on a bun |
| Bacon Breakfast Jack | 380 | Bacon replaces ham |
| Sausage Breakfast Jack | 500 | Sausage patty replaces ham |
| Sourdough Breakfast Sandwich | 400 | Sourdough bread, heartier feel |
| Supreme Croissant | 440 | Croissant bun with two meats |
| Ultimate Breakfast Sandwich | 520 | Richer stack with extra cheese and meat |
| Hash Brown (side) | 190 | Crispy potato patty |
| Mini Pancakes (8 pc.) | 140 | Light sweet side |
| Meat Lovers Breakfast Burrito | 600 | Heaviest pick on the list |
Ordering Tips That Keep Calories In Check
Build The Plate Around The Sandwich
If you want the Breakfast Jack as-is, pair it with black coffee, unsweet tea, or water. That keeps the spotlight on the sandwich while holding the meal to a modest calorie range.
Iced black coffee works cold, and hot coffee works warm—both keep tally steady. Water with lemon keeps thirst down without extras.
Use Simple Calorie Trims
- Ask for no cheese if you prefer a leaner bite.
- Skip added sauces, or use a light swipe.
- Leave the top bun off if you’re chasing a lower-carb target.
Choose Sides Wisely
Hash browns taste great but add oil and salt. If you’re craving them, share an order or save the full patty for days when you want a bigger breakfast. Mini pancakes add a sweet note with a lighter calorie tag than fries.
Taste, Texture, And Portion Feel
The Breakfast Jack eats softer than a croissant sandwich and lighter than a sausage build. The egg brings steam and a gentle chew, the ham brings a salty edge, and the slice of American cheese keeps each bite cohesive. The bun is medium in size, which makes the sandwich feel snack-friendly while still working as a quick breakfast on its own.
When A Higher-Protein Option Makes Sense
Some mornings call for a bigger protein load. If that’s the case, ask for extra ham or add bacon, then balance the plate by skipping sides. Another simple move is grabbing two Breakfast Jacks and sharing the buns: eat both eggs and meats with one bun and save the spare bun for later.
Allergens And Ingredients At A Glance
The standard sandwich contains wheat, egg, dairy, and soy. Sesame may appear in buns in some regions. If you avoid any of these, ask your local store which buns are in stock that day and whether a custom build is possible.
How To Read This Calorie Number In Your Day
A 350-calorie sandwich can fit into many eating styles. For a light start, pair it with black coffee. For a fuller morning, add fruit later in the morning. If your day leans snack-heavy, the Breakfast Jack can serve as the anchor item that keeps you satisfied between coffees.
Final Word On The Breakfast Jack
The answer you came for is simple: the standard Breakfast Jack carries 350 calories. Keep it plain and you get a fast, budget-friendly breakfast with a steady mix of protein, carbs, and fat. Tweak the build if you like, and match it with low-calorie drinks to keep the whole meal on track.
Sources: Jack in the Box menu pages for local stores that list “Breakfast Jack — 350 Cal,” and the one-page 2024 Nutrition Facts PDF.