How much protein is in whole-milk mozzarella?

Whole-milk mozzarella has 22.2 g of protein per 100 g and 6.3 g per 1 oz (28 g). That is 7.4 g of protein per 100 kcal — a modest protein contribution.

Where do these calorie figures come from?

USDA FoodData Central record 170845, “Cheese, mozzarella, whole milk” (SR Legacy, FDC SR Legacy 2018-04 + FNDDS 2024-10-31). Energy is USDA nutrient 1008 (Energy, kcal); protein, fat and carbohydrate are read from the same record. USDA data is in the public domain, and the FDC ID above links straight to it.

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CheeseUSDA SR LegacyFDC 170845

Calories in whole-milk mozzarella

USDA FoodData Central record for “Cheese, mozzarella, whole milk” — per 100 g, per every USDA serving size, and next to the other cheese rows.

The short answer

Whole-milk mozzarella: 299 kcal per 100 g. 1 oz (28 g) is 85 kcal with 6.3 g of protein. Source: USDA FoodData Central record 170845, "Cheese, mozzarella, whole milk".

Per 100 g

Nutrient	Per 100 g	Share of energy
Energy	299 kcal	100%
Protein	22.2 g	30%
Fat	22.1 g	67%
Carbohydrate	2.4 g	3%

Whole-milk mozzarella is 299 kcal per 100 g in USDA FoodData Central (SR Legacy). Of that energy, about 30% comes from protein, 67% from fat and 3% from carbohydrate. That works out to 7.4 g of protein per 100 kcal — a modest protein contribution.

Per serving

The serving sizes USDA lists for this record, priced from the per-100 g figures above. Nothing here is rounded to a “portion” — the gram weight next to each label is what the calories are computed from.

Serving	Weight	Calories	Protein	Fat	Carbs
100 g	100 g	299	22.2 g	22.1 g	2.4 g
1 cup, shredded	112 g	335	24.9 g	24.8 g	2.7 g
1 oz	28 g	85	6.3 g	6.3 g	0.7 g
6 slices	170 g	508	37.7 g	37.5 g	4.1 g

Compared with other cheese

Food	kcal / 100 g	Protein / 100 g	Per serving
Cheddar cheese	403	22.9 g	114 kcal · 1 oz
Whole-milk mozzarella	299	22.2 g	85 kcal · 1 oz
Grated Parmesan	420	28.4 g	21 kcal · 1 tbsp
Feta cheese	265	14.2 g	75 kcal · 1 oz
Cream cheese	350	6.2 g	51 kcal · 1 tbsp
Swiss cheese	393	27 g	112 kcal · 1 oz

Worth knowing

Mozzarella is the lightest of the common hard-ish cheeses per 100 g because it holds more water than cheddar or Swiss. Per ounce that is about 85 kcal against cheddar's 115.

Other tables in dairy and egg products

The same numbers for the foods this one usually shares a plate — or a shopping list — with.

Questions about whole-milk mozzarella

How many calories are in whole-milk mozzarella?: Whole-milk mozzarella: 299 kcal per 100 g. 1 oz (28 g) is 85 kcal with 6.3 g of protein. Source: USDA FoodData Central record 170845, "Cheese, mozzarella, whole milk".
How much protein is in whole-milk mozzarella?: Whole-milk mozzarella has 22.2 g of protein per 100 g and 6.3 g per 1 oz (28 g). That is 7.4 g of protein per 100 kcal — a modest protein contribution.
Where do these calorie figures come from?: USDA FoodData Central record 170845, “Cheese, mozzarella, whole milk” (SR Legacy, FDC SR Legacy 2018-04 + FNDDS 2024-10-31). Energy is USDA nutrient 1008 (Energy, kcal); protein, fat and carbohydrate are read from the same record. USDA data is in the public domain, and the FDC ID above links straight to it.

How calorie.one logs it

Type “whole-milk mozzarella” into calorie.one and the app matches this exact record — “Cheese, mozzarella, whole milk” — estimates the grams, and shows the line with its USDA label. You correct the amount; the per-100 g figure is never guessed. That split between recognition and arithmetic is the whole methodology. For the numbers in context, read Calories in olive oil, butter and cooking fats.