Krystal under 400 calories: 18 orders, ranked

Of the 50 single orders we track at Krystal, 18 come in at or under 400 calories — 36%. The most protein in one item under 400 is the Original Scrambler with Bacon, 16 g for 330 calories; the most filling by protein and fiber per calorie is the Double Krystal (13 g protein, 2 g fiber, 250 cal). 9 entrées fit under 400; 3 do not.

Source: Krystal nutrition guide (official), October 27, 2025 edition · Data refreshed September 15, 2026

• 18 orders under 400
• 16g most protein in one item
• 16g protein in a full meal
• 3 entrées over 400

As of September 2026, 18 of the 50 Krystal single orders we track come in at or under 400 calories, and the most protein in a complete Krystal meal under 400 is 16 g (A Chik and a water).

Three complete Krystal meals under 400 calories

Under 400, the most-protein meal is built on the Chik (400 cal), which leaves 0 calories for its sides and drink. One meal-sized entrée, up to two different sides and a drink — the MinMax app's meal and the best under the cap, drink included (water only where no published drink fits; the lightest meal takes a zero-calorie drink, or water). The lightest meal is unchanged from under 300; the others use the extra 100 calories.

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

Every Krystal order under 400 calories, ranked by protein

Single orders only — no desserts, kids' meals, combos, sauces or toppings — by grams of protein, then calories. The median order under 400 is 255 calories and 9 of the 18 are entrées. Figures as Krystal published them, rounded to whole numbers (how we check them).

What 400 calories buys at Krystal

Going from 300 to 400 calories adds 6 orders: Biscuit (330), Original Scrambler with Bacon (330), Tots (Medium) (330), Onion Rings (Medium) (390), Chik (400) and Spicy Chik (400).

What doesn't fit under 400

3 of 12 Krystal entrées are over 400 calories; the lightest of them, the Chipotle Patty Melt (limited time), misses by 120 calories at 520. With more room, see Krystal under 500. Tighter budget: Krystal under 300.

More at Krystal

• Krystal calories & nutrition (61 items listed)
• Krystal under 300 calories (12 orders)
• Krystal under 500 calories (25 orders)
• Krystal under 600 calories (29 orders)
• Krystal 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.

• Wienerschnitzel under 400
• A&W under 400
• McDonald's under 400