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Last updated: Aug 12, 2026

Thundercloud Subs

Tuna, Large

Classic SubsPopular

Thundercloud Subs Tuna, Large is fat-leaning, with about 55% of macro calories from fat. Each serving has 637 calories, 26g protein, 42g carbs, and 37g fat, making it a stronger fit for high-protein restaurant planning.

1 serving

Serving Size

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637

Calories

Per serving

26 g

Protein

42 g

Carbs

37 g

Fat

Nutrition Facts

Amount per serving

Calories637 kcal

% Daily Value*

Total Fat 37 g47%

Saturated Fat 9 g45%

Trans Fat 0 g—

Cholesterol 73 mg24%

Sodium 1,003 mg44%

Total Carbohydrate 42 g15%

Dietary Fiber 0 g0%

Total Sugars 0 g—

Protein 26 g52%

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

637

kcal

Protein26 g (17%)

Carbs42 g (28%)

Fat37 g (55%)

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

Meal Planning Insights

Protein density4.1/10

17% of macro calories come from protein.

Satiety index10/10

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

Activity estimate159 min walk

About 64 minutes of running for these calories.

Key Nutrients

Protein 26 g52%

Fiber 0 g0%

Sodium 1,003 mg44%

Sugars 0 g—

Saturated Fat 9 g45%

How we calculate these values

Diet Compatibility

High protein4.1/10 protein density from 26g protein and 637 calories.No

Lower carb42g carbs per serving.No

Low fat37g total fat per serving.No

High sugar0g total sugars per serving.No

High sodium1,003mg sodium per serving.Yes

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

Similar Items in Classic Subs

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American Classic, Large438 kcal · 20 g protein American Classic, Small307 kcal · 13 g protein Avocado, Large391 kcal · 8 g protein Avocado, Small301 kcal · 6 g protein

Compare with other items

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

Quick comparisons

Tuna, Large has 592 more calories than American Cheese and 24g more protein. Compare

Tuna, Large has 199 more calories than American Classic, Large and 6g more protein. Compare

American Cheese45 kcal · 2 g proteinAmerican Classic, Large438 kcal · 20 g proteinAmerican Classic, Small307 kcal · 13 g proteinAustin Club Salad (with Egg & Cheese)462 kcal · 30 g proteinAustin Club, Large662 kcal · 33 g proteinAustin Club, Small487 kcal · 27 g protein

Compare with American Cheese

Tuna, Large Compared With Nearby Items

Compared with Blt, Large, another Classic Subs item at Thundercloud Subs, Tuna, Large has 69 more calories than it and 2g less 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, Large are maintained in Nutrimetry from restaurant-published menu data and were last checked on Aug 12, 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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