How much protein is in whole milk?

Whole milk has 3.2 g of protein per 100 g and 7.8 g per 1 cup (244 g). That is 5.2 g of protein per 100 kcal — a modest protein contribution.

Where do these calorie figures come from?

USDA FoodData Central record 171265, “Milk, whole, 3.25% milkfat, with added vitamin D” (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.

All foods

Milk and milk alternativesUSDA SR LegacyFDC 171265

Calories in whole milk

USDA FoodData Central record for “Milk, whole, 3.25% milkfat, with added vitamin D” — per 100 g, per every USDA serving size, and next to the other milk and milk alternatives rows.

The short answer

Whole milk: 61 kcal per 100 g. 1 cup (244 g) is 149 kcal with 7.8 g of protein. Source: USDA FoodData Central record 171265, "Milk, whole, 3.25% milkfat, with added vitamin D".

Per 100 g

Nutrient	Per 100 g	Share of energy
Energy	61 kcal	100%
Protein	3.2 g	21%
Fat	3.3 g	48%
Carbohydrate	4.8 g	31%

Whole milk is 61 kcal per 100 g in USDA FoodData Central (SR Legacy). Of that energy, about 21% comes from protein, 48% from fat and 31% from carbohydrate. That works out to 5.2 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	61	3.2 g	3.3 g	4.8 g
1 cup	244 g	149	7.8 g	8.1 g	11.7 g
1 fl oz	31 g	19	1 g	1 g	1.5 g
1 tbsp	15 g	9	0.5 g	0.5 g	0.7 g
1 quart	976 g	595	31.2 g	32.2 g	46.8 g

Compared with other milk and milk alternatives

Food	kcal / 100 g	Protein / 100 g	Per serving
Whole milk	61	3.2 g	149 kcal · 1 cup
2% milk	50	3.3 g	122 kcal · 1 cup
Skim milk	34	3.4 g	83 kcal · 1 cup
Chocolate milk (whole)	83	3.2 g	208 kcal · 1 cup
Unsweetened almond milk	15	0.4 g	39 kcal · 1 cup
Sweetened vanilla almond milk	38	0.4 g	91 kcal · 1 cup

Worth knowing

Whole milk is 3.25% fat by weight, which is about half its calories. A cup (244 g) is about 150 kcal with 8 g of protein — skim milk keeps the protein and drops the fat, which is where the 60 kcal per cup difference lives.

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

How many calories are in whole milk?: Whole milk: 61 kcal per 100 g. 1 cup (244 g) is 149 kcal with 7.8 g of protein. Source: USDA FoodData Central record 171265, "Milk, whole, 3.25% milkfat, with added vitamin D".
How much protein is in whole milk?: Whole milk has 3.2 g of protein per 100 g and 7.8 g per 1 cup (244 g). That is 5.2 g of protein per 100 kcal — a modest protein contribution.
Where do these calorie figures come from?: USDA FoodData Central record 171265, “Milk, whole, 3.25% milkfat, with added vitamin D” (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” into calorie.one and the app matches this exact record — “Milk, whole, 3.25% milkfat, with added vitamin D” — 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 How much protein do you need per day?.