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Last updated: Aug 9, 2026

Cosi

Tuna Sandwich

Sandwiches & MeltsPopular

Cosi Tuna Sandwich is protein-leaning, with about 45% of macro calories from protein. Each serving has 526 calories, 53g protein, 52g carbs, and 6g fat, making it a stronger fit for high-protein restaurant planning.

11.2 oz

Serving Size

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526

Calories

Per serving

53 g

Protein

52 g

Carbs

6 g

Fat

Nutrition Facts

Amount per serving

Calories526 kcal

% Daily Value*

Total Fat 6 g8%

Saturated Fat 2 g10%

Trans Fat 0 g—

Cholesterol 83 mg28%

Sodium 1,099 mg48%

Total Carbohydrate 52 g19%

Dietary Fiber 3 g11%

Total Sugars 8 g—

Protein 53 g106%

Vitamin A—

Vitamin C—

Vitamin D—

Calcium—

Iron—

Potassium—

Caffeine—

* The % Daily Value tells you how much a nutrient in a serving contributes to a daily diet.

Nutrition Breakdown

526

kcal

Protein53 g (45%)

Carbs52 g (44%)

Fat6 g (11%)

Estimated calorie contribution using 4 kcal/g for protein and carbohydrates and 9 kcal/g for fat.

Meal Planning Insights

Protein density10/10

45% of macro calories come from protein.

Satiety index10/10

Estimated from protein, fiber, calories, and fat balance.

Activity estimate132 min walk

About 53 minutes of running for these calories.

Key Nutrients

Protein 53 g106%

Fiber 3 g11%

Sodium 1,099 mg48%

Sugars 8 g—

Saturated Fat 2 g10%

How we calculate these values

Diet Compatibility

High protein10/10 protein density from 53g protein and 526 calories.Yes

Lower carb52g carbs per serving.No

Low fat6g total fat per serving.No

High sugar8g total sugars per serving.No

High sodium1,099mg sodium per serving.Yes

Vegetarian source flagNo vegetarian flag is published for this item.Not flagged

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Bacon Turkey Cheddar Sandwich642 kcal · 39 g protein

Compare with other items

Select up to 3 items to compare calories, protein, sodium, and macros.

Quick comparisons

Tuna Sandwich has 154 fewer calories than Adobo Chicken With Avocado Bowl and 26g more protein. Compare

Tuna Sandwich has 106 more calories than Adobo Lime Chicken Salad and 33g more protein. Compare

Adobo Chicken With Avocado Bowl680 kcal · 27 g proteinAdobo Lime Chicken Salad420 kcal · 20 g proteinBBQ Stix & Bits260 kcal · 6 g proteinBacon Turkey Cheddar Sandwich642 kcal · 39 g proteinBacon, Egg & Cheese Bagel670 kcal · 33 g proteinBagel, Asiago300 kcal · 11 g protein

Compare with Adobo Chicken With Avocado Bowl

Tuna Sandwich Compared With Nearby Items

Compared with Bacon Turkey Cheddar Sandwich, another Sandwiches & Melts item at Cosi, Tuna Sandwich has 116 fewer calories than it and 14g more protein than it. That makes this page useful for deciding between nearby menu choices, not just reading a raw nutrition label.

Data Source and Methodology

Nutrition values for Tuna Sandwich are maintained in Nutrimetry from restaurant-published menu data and were last checked on Aug 9, 2026. Macro percentages use 4 calories per gram for protein and carbohydrates and 9 calories per gram for fat.

Read the data methodology

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