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Last updated: Aug 9, 2026

Firehouse Subs

Prime Rib Steak - Large

Hot Specialty SubsPopular

Firehouse Subs Prime Rib Steak - Large is fat-leaning, with about 47% of macro calories from fat. Each serving has 1,341 calories, 79.8g protein, 103.4g carbs, and 71.2g fat, making it better suited to carb-aware planning than low-carb goals.

1 Sub (508.6g)

Serving Size

508.6 g

Serving Weight

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1,341

Calories

Per serving

79.8 g

Protein

103.4 g

Carbs

71.2 g

Fat

Nutrition Facts

Amount per serving

Calories1,341 kcal

% Daily Value*

Total Fat 71.2 g91%

Saturated Fat 20.5 g102%

Trans Fat 0 g—

Cholesterol 217 mg72%

Sodium 4,087 mg178%

Total Carbohydrate 103.4 g38%

Dietary Fiber 10.7 g38%

Total Sugars 15 g—

Protein 79.8 g160%

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

1,341

kcal

Protein79.8 g (23%)

Carbs103.4 g (30%)

Fat71.2 g (47%)

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

Meal Planning Insights

Protein density6/10

23% of macro calories come from protein.

Satiety index10/10

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

Activity estimate335 min walk

About 134 minutes of running for these calories.

Key Nutrients

Protein 79.8 g160%

Fiber 10.7 g38%

Sodium 4,087 mg178%

Sugars 15 g—

Saturated Fat 20.5 g102%

How we calculate these values

Diet Compatibility

High protein6/10 protein density from 79.8g protein and 1,341 calories.Yes

Lower carb103.4g carbs per serving.No

Low fat71.2g total fat per serving.No

High sugar15g total sugars per serving.No

High sodium4,087mg sodium per serving.Yes

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

Ingredients

Large Wheat Sub Roll: ENRICHED WHEAT FLOUR (WHEAT FLOUR, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID), MALTED BARLEY FLOUR, WATER, WHOLE WHEAT FLOUR, SUGAR, YEAST, WHEAT GLUTEN, SOYBEAN OIL, WHEAT BRAN, SALT, DRY HONEY (HONEY, SUGAR),…

Allergens

Contains

WheatMilkEggSoy

Compare with other items

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

Quick comparisons

Prime Rib Steak - Large has 1191 more calories than 1% Chocolate Milk and 72.8g more protein. Compare

Prime Rib Steak - Large has 1251 more calories than 1% Milk and 72.8g more protein. Compare

1% Chocolate Milk150 kcal · 7 g protein1% Milk90 kcal · 7 g protein5-Cheese Mac & Cheese380 kcal · 17 g proteinApple Juice100 kcal · 0 g proteinAu Jus Bell Peppers5 kcal · 0.2 g proteinAu Jus Bell Peppers3 kcal · 0.1 g protein

Compare with 1% Chocolate Milk

Prime Rib Steak - Large Compared With Nearby Items

Firehouse Subs Prime Rib Steak - Large is listed in the Hot Specialty Subs category with 1,341 calories, 79.8g protein, 103.4g carbs, and 71.2g fat per serving.

Data Source and Methodology

Nutrition values for Prime Rib Steak - Large 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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