Protein content
A 1 cup serving of buttermilk contains 8.1 g of protein - a good source of protein, about 16% of the 50 g Daily Value.
Share of this food's calories that come from protein - it is moderately protein-dense.
| Serving | 1 cup (245 g) |
|---|---|
| Protein per serving | 8.1 g |
| Protein per 100 g | 3.31 g |
| Calories per serving | 98 kcal |
| Protein density | 33% of calories |
| Share of 50 g Daily Value | 16% |
| Protein quality | Complete protein |
| Category | Dairy |
| Food type | Whole food |
| USDA record | FoodData Central #170874 |
A typical 1 cup serving of buttermilk contains 8.1 grams of protein (3.31 g per 100 g), which makes it a good source of protein. That covers roughly 16% of the 50 g reference Daily Value, so it adds toward your protein total for the day.
Protein accounts for roughly 33% of the calories in buttermilk, making it moderately 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.
Among the 81 dairy foods in the database, buttermilk ranks 28th by protein per serving, and 347th out of all 796 foods on the site. Set against swiss cheese, another dairy food entry in the database, a serving carries about 0.5 g more protein (swiss cheese has 7.6 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 above is measured by volume at 245 g. The per-100 g figure lets you compare it directly against any other food here, whatever its serving.
Source: USDA FoodData Central #170874 - "Milk, buttermilk, fluid, cultured, lowfat" (SR Legacy, published 4/1/2019). Values are the published reference figures for that record, not lab measurements for a specific brand or batch.
Quick answers
Buttermilk has 3.31 g of protein per 100 g. A typical 1 cup serving (245 g) provides 8.1 g.
Yes. Buttermilk 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.
A 1 cup serving of buttermilk contains 8.1 g of protein, about 16% of the 50 g reference Daily Value.
Buttermilk is a good source of protein, and about 33% of its calories come from protein, which makes it moderately protein-dense. Set against swiss cheese, another dairy food entry in the database, a serving carries about 0.5 g more protein (swiss cheese has 7.6 g per 1 oz).
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