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Last updated: Aug 9, 2026

Capt. Submarine

6" White Sub Bun

BreadPopular

Capt. Submarine 6" White Sub Bun is carb-leaning, with about 80% of macro calories from carb. Each serving has 76 calories, 3.2g protein, 15.1g carbs, and 0.3g fat, making it a lighter restaurant option to compare with larger meals.

1 Serving (28.3g)

Serving Size

28.3 g

Serving Weight

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Calories

Per serving

3.2 g

Protein

15.1 g

Carbs

0.3 g

Fat

Nutrition Facts

Amount per serving

Calories76 kcal

% Daily Value*

Total Fat 0.3 g0%

Saturated Fat 0.2 g1%

Trans Fat 0 g—

Cholesterol 0 mg0%

Sodium 164 mg7%

Total Carbohydrate 15.1 g5%

Dietary Fiber 0 g0%

Total Sugars 0.6 g—

Protein 3.2 g6%

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

kcal

Protein3.2 g (17%)

Carbs15.1 g (80%)

Fat0.3 g (4%)

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

Meal Planning Insights

Protein density4.2/10

17% of macro calories come from protein.

Satiety index4.3/10

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

Activity estimate19 min walk

About 8 minutes of running for these calories.

Key Nutrients

Protein 3.2 g6%

Fiber 0 g0%

Sodium 164 mg7%

Sugars 0.6 g—

Saturated Fat 0.2 g1%

How we calculate these values

Diet Compatibility

High protein4.2/10 protein density from 3.2g protein and 76 calories.No

Lower carb15.1g carbs per serving.Yes

Low fat0.3g total fat per serving.Yes

High sugar0.6g total sugars per serving.No

High sodium164mg sodium per serving.No

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

Similar Items in Bread

View all

10" White Flour Tortilla82 kcal · 2 g protein 10" Whole Wheat Tortilla79 kcal · 2.5 g protein 6" Flatbread80 kcal · 2.5 g protein 6" Wheat Sub Bun79 kcal · 3.2 g protein

Compare with other items

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

Quick comparisons

6" White Sub Bun has 7 fewer calories than 10" White Flour Tortilla and 1.2g more protein. Compare

6" White Sub Bun has 4 fewer calories than 10" Whole Wheat Tortilla and 0.7g more protein. Compare

10" White Flour Tortilla82 kcal · 2 g protein10" Whole Wheat Tortilla79 kcal · 2.5 g protein6" Flatbread80 kcal · 2.5 g protein6" Wheat Sub Bun79 kcal · 3.2 g proteinAdd 3" Sliced Pepperoni51 kcal · 3.7 g proteinAdd Ancho Chipotle Sauce85 kcal · 0.4 g protein

Compare with 10" White Flour Tortilla

6" White Sub Bun Compared With Nearby Items

Compared with 6" Wheat Sub Bun, another Bread item at Capt. Submarine, 6" White Sub Bun has 3 fewer calories than it and the same protein as 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 6" White Sub Bun 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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