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Last updated: Aug 9, 2026
Firehouse Subs

Mayonnaise

Large Sub CondimentsPopular

Firehouse Subs Mayonnaise is fat-leaning, with about 96% of macro calories from fat. Each serving has 304 calories, 0g protein, 3g carbs, and 33.4g fat, making it a lighter restaurant option to compare with larger meals.

1.5 Ounces
Serving Size
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304
Calories
Per serving
0 g
Protein
3 g
Carbs
33.4 g
Fat

Nutrition Facts

Amount per serving

Calories304 kcal
% Daily Value*
Total Fat 33.4 g43%
Saturated Fat 4.6 g23%
Trans Fat 0 g—
Cholesterol 15 mg5%
Sodium 198 mg9%
Total Carbohydrate 3 g1%
Dietary Fiber 0 g0%
Total Sugars 0 g—
Protein 0 g0%
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

304
kcal
Protein0 g (0%)
Carbs3 g (4%)
Fat33.4 g (96%)
Estimated calorie contribution using 4 kcal/g for protein and carbohydrates and 9 kcal/g for fat.

Meal Planning Insights

Protein density0/10

0% of macro calories come from protein.

Satiety index0/10

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

Activity estimate76 min walk

About 30 minutes of running for these calories.

Key Nutrients

Protein 0 g0%
Fiber 0 g0%
Sodium 198 mg9%
Sugars 0 g—
Saturated Fat 4.6 g23%
How we calculate these values

Diet Compatibility

High protein0/10 protein density from 0g protein and 304 calories.No
Lower carb3g carbs per serving.Yes
Low fat33.4g total fat per serving.No
High sugar0g total sugars per serving.No
High sodium198mg sodium per serving.No
Vegetarian source flagNo vegetarian flag is published for this item.Not flagged

Ingredients

SOYBEAN OIL, WATER, CORN SYRUP, EGG YOLKS, DISTILLED AND CIDER VINEGAR, SALT, MUSTARD SEED AND CALCIUM DISODIUM EDTA TO PROTECT FLAVOR.

Allergens

Contains

EggSoy

Compare with other items

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

Quick comparisons

Mayonnaise has 154 more calories than 1% Chocolate Milk and 7g less protein. Compare

Mayonnaise has 214 more calories than 1% Milk and 7g less protein. Compare

Compare with 1% Chocolate Milk

Mayonnaise Compared With Nearby Items

Firehouse Subs Mayonnaise is listed in the Large Sub Condiments category with 304 calories, 0g protein, 3g carbs, and 33.4g fat per serving.

Data Source and Methodology

Nutrition values for Mayonnaise 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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