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Last updated: Aug 9, 2026
Firehouse Subs

Mayonnaise

Medium Sub CondimentsPopular

Firehouse Subs Mayonnaise is fat-leaning, with about 96% of macro calories from fat. Each serving has 203 calories, 0g protein, 2g carbs, and 22.3g fat, making it a lighter restaurant option to compare with larger meals.

1 Ounces
Serving Size
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203
Calories
Per serving
0 g
Protein
2 g
Carbs
22.3 g
Fat

Nutrition Facts

Amount per serving

Calories203 kcal
% Daily Value*
Total Fat 22.3 g29%
Saturated Fat 3 g15%
Trans Fat 0 g—
Cholesterol 10 mg3%
Sodium 132 mg6%
Total Carbohydrate 2 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

203
kcal
Protein0 g (0%)
Carbs2 g (4%)
Fat22.3 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 index0.8/10

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

Activity estimate51 min walk

About 20 minutes of running for these calories.

Key Nutrients

Protein 0 g0%
Fiber 0 g0%
Sodium 132 mg6%
Sugars 0 g—
Saturated Fat 3 g15%
How we calculate these values

Diet Compatibility

High protein0/10 protein density from 0g protein and 203 calories.No
Lower carb2g carbs per serving.Yes
Low fat22.3g total fat per serving.No
High sugar0g total sugars per serving.No
High sodium132mg 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 53 more calories than 1% Chocolate Milk and 7g less protein. Compare

Mayonnaise has 113 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 Medium Sub Condiments category with 203 calories, 0g protein, 2g carbs, and 22.3g 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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