Protein content
8.3 g of protein in 1 cup (245 g) of milk (skim), or 9.9 g for every 100 kcal it supplies.
Share of this food's calories that come from protein - it is very protein-dense.
| Protein per 100 kcal | 9.9 g |
|---|---|
| Protein per 100 g | 3.37 g |
| Protein per serving | 8.3 g in 1 cup (245 g) |
| Calories from protein | 40% |
| Leucine per serving | 0.78 g |
| Rank in dairy foods, per 100 kcal | 9th of 81 |
| Rank of all foods, per 100 g | 600th of 796 |
| Share of 50 g Daily Value | 17% per serving |
| Protein quality | Complete protein |
One 1 cup, 8.3 g protein.
Every 100 kcal of milk (skim) brings 9.9 g of protein. On that measure it ranks 9th of the 81 dairy foods in this database and 256th of all 796 foods on the site. Measured by weight instead, its 3.37 g per 100 g ranks 70th in its group.
Protein accounts for roughly 40% of the calories in milk (skim), making it very protein-dense. The rest comes from fat and carbohydrate, so it adds a solid amount of protein while still carrying real energy - useful when you are eating to a calorie target rather than under one.
USDA lists 0.08 g of fat per 100 g of milk (skim), too little for a protein-to-fat ratio to mean much.
Set against romano cheese, another dairy food entry in the database, a serving carries about 0.6 g less protein (romano cheese has 8.9 g per 1 oz).
It is a complete protein - it supplies all nine essential amino acids in adequate amounts, so it can carry a meal's protein on its own. The serving quoted here is measured by volume at 245 g, and it covers about 17% of the 50 g FDA Daily Value for protein.
Serving sizes
| Portion | Weight | Protein | Calories |
|---|---|---|---|
| 100 g | 100 g | 3.37 g | 34 kcal |
| 1 cup (serving used here) | 245 g | 8.3 g | 83 kcal |
| 1 fl oz | 30.6 g | 1 g | 10 kcal |
| 1 quart | 980 g | 33 g | 333 kcal |
Portion weights are the household measures listed on the USDA record; protein and calories scale from the per-100 g figures.
Amino acids
| Amino acid | Per 100 g | Per serving | mg per g protein |
|---|---|---|---|
| leucine | 0.319 g | 0.78 g | 95 |
| lysine | 0.282 g | 0.69 g | 84 |
| valine | 0.221 g | 0.54 g | 66 |
| isoleucine | 0.174 g | 0.43 g | 52 |
| threonine | 0.144 g | 0.35 g | 43 |
| phenylalanine | 0.175 g | 0.43 g | 52 |
| methionine | 0.088 g | 0.22 g | 26 |
| histidine | 0.102 g | 0.25 g | 30 |
| tryptophan | 0.043 g | 0.11 g | 13 |
Per-100 g values are the amino acid analysis on the USDA record. The serving and per-gram-of-protein columns are arithmetic on those values; they are not a protein quality score.
Related
Highest-protein dairy foods per serving · Most protein-dense foods · Highest protein per 100 g
Head to head
Quick answers
3.37 g. The 1 cup serving used on this page weighs 245 g and so carries 8.3 g.
9.9 g. That figure divides its 3.37 g of protein per 100 g by its 34 kcal per 100 g, so it does not depend on serving size.
Yes. The protein in milk (skim) supplies all nine essential amino acids in adequate amounts, so it can carry a meal's protein on its own.
About 17%. One 1 cup serving has 8.3 g, and the FDA Daily Value for protein is 50 g.
Figures from USDA FoodData Central record #171269 (Milk, nonfat, fluid, with added vitamin A and vitamin D (fat free or skim)), SR Legacy data. USDA data is in the public domain. Values are the published reference figures for that record, not lab measurements for a specific brand or batch.