Jack in the Box under 400 calories: 22 orders, ranked

Of the 91 Jack in the Box items we track, 22 are single orders at or under 400 calories — 24% of the menu. The most protein in one item under 400 is the Chicken Strips (Grilled), 43 g for 250 calories; the most filling by protein and fiber per calorie is the Chicken Strips (Grilled) (43 g protein, 0 g fiber, 250 cal). 12 entrées fit under 400; 51 do not.

Source: healthyfastfood.org (third-party host) · Data refreshed September 14, 2026

• 22 orders under 400
• 43g most protein in one item
• 47g protein in a full meal
• 51 entrées over 400

As of September 2026, 22 of the 91 Jack in the Box items we track fit under 400 calories, and the most protein in a complete Jack in the Box meal under 400 is 47 g (Chicken Strips (Grilled), Mini Pancakes, and a water).

Three complete Jack in the Box meals under 400 calories

Under 400, the most-protein entrée — the Chicken Strips (Grilled), 250 cal — leaves 150 calories for a side. Entrée first, then a side, then a drink if there is room — the same greedy order the MinMax app uses (water unless a shake adds 10 g of protein). The most filling and lightest meals are unchanged from under 300; the other uses the extra 100 calories.

Build your own Jack in the Box order under 400 calories → Swap any item, add a side, share the link.

Every Jack in the Box order under 400 calories, ranked by protein

Single orders only — no kids' meals, combos, sauces or toppings — by grams of protein, then calories. The median order under 400 is 300 calories and 12 of the 22 are entrées. Figures as Jack in the Box published them (how we check them).

What 400 calories buys at Jack in the Box

Going from 300 to 400 calories adds 11 orders: Bacon Breakfast Jack® (310), New York Style Cheesecake (310), Cheeseburger (320), Chicken Fajita Pita (w/ Salsa) (330), French Fries (Small) (330), Tiny Tacos (350), Spicy Tiny Tacos (360) and Cheddar Biscuit Breakfast Sandwich (Bacon) (370) and 3 more.

What doesn't fit under 400

51 of 63 Jack in the Box entrées are over 400 calories; the lightest of them, the Fish Sandwich, misses by 10 calories at 410. With more room, see Jack in the Box under 500. Tighter budget: Jack in the Box under 300. Closest misses: Fish Sandwich (410), Sourdough Breakfast Sandwich (410), Bacon, Egg & Cheese Biscuit (430), Sausage Breakfast Jack® (440) and Supreme Croissant (450).

More at Jack in the Box

• Jack in the Box calories & nutrition (all 91 items)
• Jack in the Box under 300 calories (11 orders)
• Jack in the Box under 500 calories (35 orders)
• Jack in the Box under 600 calories (51 orders)
• High-protein Jack in the Box orders (15 items)
• Jack in the Box calorie calculator (build an order under your cap)

Under 400 calories at other chains

The same cap at 3 Burgers chains, or the cross-chain pillar: fast food under 400 calories.

• Carl's Jr. under 400
• Hardee's under 400
• Shake Shack under 400