Rubio's Coastal Grill under 300 calories: 17 orders, ranked

Of the 143 single orders we track at Rubio's Coastal Grill, 17 come in at or under 300 calories — 12%. The most protein in one item under 300 is the No-Fried Pinto Beans with Melted Cheese (Large), 20 g for 300 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). 7 entrées fit under 300; 119 do not.

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

• 17 orders under 300
• 20g most protein in one item
• 15g protein in a full meal
• 119 entrées over 300

As of September 2026, 17 of the 143 Rubio's Coastal Grill single orders we track come in at or under 300 calories, and the most protein in a complete Rubio's Coastal Grill meal under 300 is 15 g (A Classic Taco with All Natural Steak and a large Aha Blueberry Pomegranate).

Three complete Rubio's Coastal Grill meals under 300 calories

Under 300, the most-protein meal is built on the Classic Taco with All Natural Steak (270 cal), which leaves 30 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).

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Every Rubio's Coastal Grill order under 300 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 300 is 250 calories and 7 of the 17 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 300 calories buys at Rubio's Coastal Grill

The 8 lightest orders under 300: No-Fried Pinto Beans with Melted Cheese (Regular) (170), Black Beans with Melted Cheese (Regular) (180), Citrus Rice (Regular) (180), Mexican Rice (Regular) (180), Mexican Street Corn (Regular) (180), Tortilla Chips (Regular) (210), Grilled Fish Taco with Wild-Caught Mahi Mahi (230) and Grilled Fish Taco with Blackened Wild-Caught Mahi Mahi (240).

What doesn't fit under 300

119 of 126 Rubio's Coastal Grill entrées are over 300 calories; the lightest of them, The Original Fish Taco, misses by 20 calories at 320. With more room, see Rubio's Coastal Grill under 400. Closest misses: 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) and Roasted Sweet Potato Taco (340).

More at Rubio's Coastal Grill

• Rubio's Coastal Grill calories & nutrition (188 items listed)
• Rubio's Coastal Grill under 400 calories (28 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 300 calories at other chains

The same cap at 3 Mexican chains, or the cross-chain pillar: fast food under 300 calories.

• Torchy's Tacos under 300
• Taco Bell under 300
• Del Taco under 300