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Last updated: Aug 9, 2026

Port of Subs

Sourdough

Bread - Medium SubsPopular

Port of Subs Sourdough is carb-leaning, with about 84% of macro calories from carb. Each serving has 273 calories, 9.2g protein, 57.1g carbs, and 0.8g fat, making it a lighter restaurant option to compare with larger meals.

4.9 Oz (139.9g)

Serving Size

139.9 g

Serving Weight

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273

Calories

Per serving

9.2 g

Protein

57.1 g

Carbs

0.8 g

Fat

Nutrition Facts

Amount per serving

Calories273 kcal

% Daily Value*

Total Fat 0.8 g1%

Saturated Fat 0.3 g1%

Trans Fat 0 g—

Cholesterol 0 mg0%

Sodium 594 mg26%

Total Carbohydrate 57.1 g21%

Dietary Fiber 2.2 g8%

Total Sugars 0.8 g—

Protein 9.2 g18%

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

273

kcal

Protein9.2 g (14%)

Carbs57.1 g (84%)

Fat0.8 g (3%)

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

Meal Planning Insights

Protein density3.4/10

14% of macro calories come from protein.

Satiety index8.1/10

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

Activity estimate68 min walk

About 27 minutes of running for these calories.

Key Nutrients

Protein 9.2 g18%

Fiber 2.2 g8%

Sodium 594 mg26%

Sugars 0.8 g—

Saturated Fat 0.3 g1%

How we calculate these values

Diet Compatibility

High protein3.4/10 protein density from 9.2g protein and 273 calories.No

Lower carb57.1g carbs per serving.No

Low fat0.8g total fat per serving.Yes

High sugar0.8g total sugars per serving.No

High sodium594mg sodium per serving.No

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

Ingredients

Un-Bleached Wheat Flour (Wheat Flour, Malted Barley Flour, Niacin, Iron, Thiamin Mononitrate, Riboflavin, Folic Acid), Water, Sour Sponge In Production, Salt, Arctic (Wheat).

Allergens

Contains

Wheat

Compare with other items

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

Quick comparisons

Sourdough has 3926 fewer calories than 2-Foot Brookie in a Box and 24g less protein. Compare

Sourdough has 2926 fewer calories than 2-Foot Brownie in a Box and 14g less protein. Compare

2-Foot Brookie in a Box4,199 kcal · 33.2 g protein2-Foot Brownie in a Box3,199 kcal · 23.2 g protein2-Foot Classic Sub Macaroni Salad Center3,815 kcal · 163.6 g protein2-Foot Classic Sub Potato Salad Center3,248 kcal · 158 g protein2-Foot Cookie in a Box3,000 kcal · 30 g protein4x4 Brookie954 kcal · 7.4 g protein

Compare with 2-Foot Brookie in a Box

Sourdough Compared With Nearby Items

Port of Subs Sourdough is listed in the Bread - Medium Subs category with 273 calories, 9.2g protein, 57.1g carbs, and 0.8g fat per serving.

Data Source and Methodology

Nutrition values for Sourdough 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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