Rubio's Coastal Grill under 400 calories: 28 orders, ranked

Of the 143 single orders we track at Rubio's Coastal Grill, 28 come in at or under 400 calories — 20%. The most protein in one item under 400 is the Grilled Gourmet Taco with All Natural Steak, 21 g for 360 calories; the most filling by protein and fiber per calorie is the Black Beans with Melted Cheese (Regular) (12 g protein, 12 g fiber, 180 cal). 15 entrées fit under 400; 111 do not.

Source: Rubio's Coastal Grill nutrition guide (official), June 2026 edition · Data refreshed September 15, 2026

• 28 orders under 400
• 21g most protein in one item
• 24g protein in a full meal
• 111 entrées over 400

As of September 2026, 28 of the 143 Rubio's Coastal Grill single orders we track come in at or under 400 calories, and the most protein in a complete Rubio's Coastal Grill meal under 400 is 24 g (A Grilled Fish Taco with Wild-Caught Mahi Mahi, a regular side of No-Fried Pinto Beans with Melted Cheese, and a large Aha Blueberry Pomegranate).

Three complete Rubio's Coastal Grill meals under 400 calories

Under 400, the most-protein meal is built on the Grilled Fish Taco with Wild-Caught Mahi Mahi (230 cal), which leaves 170 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.

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Every Rubio's Coastal Grill 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 280 calories and 15 of the 28 are entrées. Figures as Rubio's Coastal Grill published them, rounded to whole numbers; the burritos, bowls and salads add up its published ingredients (how we check them).

What 400 calories buys at Rubio's Coastal Grill

Going from 300 to 400 calories adds 11 orders: The Original Fish Taco (320), Grilled Gourmet Taco with Grilled Shrimp (330), Mexican Street Corn Shrimp Taco (330), Grilled Gourmet Taco with All Natural Chicken (340), Guacamole & Chips (Regular) (340), Roasted Sweet Potato Taco (340), Norway Lobster Taco (350) and Grilled Gourmet Taco with All Natural Steak (360) and 3 more.

What doesn't fit under 400

111 of 126 Rubio's Coastal Grill entrées are over 400 calories; the lightest of them, the Baja Fish Slider, misses by 100 calories at 500. With more room, see Rubio's Coastal Grill under 500. Tighter budget: Rubio's Coastal Grill under 300. Closest misses: Baja Fish Slider (500) and Chopped Salad with Grilled Shrimp (500).

More at Rubio's Coastal Grill

• Rubio's Coastal Grill calories & nutrition (188 items listed)
• Rubio's Coastal Grill under 300 calories (17 orders)
• Rubio's Coastal Grill under 500 calories (31 orders)
• Rubio's Coastal Grill under 600 calories (36 orders)
• High-protein Rubio's Coastal Grill orders (13 items)
• Rubio's Coastal Grill calorie calculator (build an order under your cap)

Under 400 calories at other chains

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

• Torchy's Tacos under 400
• Taco Bell under 400
• Del Taco under 400