Food database · Meat & poultry
Protein content
A 3 oz cooked serving of beef sirloin steak contains 25.2 g of protein - an excellent source of protein, about 50% of the 50 g Daily Value.
Share of this food's calories that come from protein - it is very protein-dense.
| Serving | 3 oz cooked (85 g) |
|---|---|
| Protein per serving | 25.2 g |
| Protein per 100 g | 29.6 g |
| Calories per serving | 175 kcal |
| Protein density | 57% of calories |
| Share of 50 g Daily Value | 50% |
| Protein quality | Complete protein |
| Category | Meat & poultry |
| Food type | Whole food |
| USDA record | FoodData Central #168633 |
A typical 3 oz cooked serving of beef sirloin steak contains 25.2 grams of protein (29.6 g per 100 g), which makes it an excellent source of protein. That covers roughly 50% of the 50 g reference Daily Value, so it can anchor a high-protein meal for the day.
About 57% of the calories in beef sirloin steak come from protein, which makes it very protein-dense - close to the practical ceiling for a whole food. Foods in this band are the ones that let you raise your protein intake without raising your calorie intake much at all.
Among the 133 meats in the database, beef sirloin steak ranks 27th by protein per serving, and 39th out of all 796 foods on the site. Set against beef liver, another meat entry in the database, a serving carries about 0.5 g more protein (beef liver has 24.7 g per 3 oz cooked).
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 weight at 85 g. The per-100 g figure lets you compare it directly against any other food here, whatever its serving.
Rich in leucine, the amino acid that most strongly triggers muscle-protein synthesis.
Source: USDA FoodData Central #168633 - "Beef, top sirloin, steak, separable lean and fat, trimmed to 0" fat, select, cooked, broiled" (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
Beef sirloin steak has 29.6 g of protein per 100 g. A typical 3 oz cooked serving (85 g) provides 25.2 g.
Yes. Beef sirloin steak 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 3 oz cooked serving of beef sirloin steak contains 25.2 g of protein, about 50% of the 50 g reference Daily Value.
Beef sirloin steak is an excellent source of protein, and about 57% of its calories come from protein, which makes it very protein-dense. Set against beef liver, another meat entry in the database, a serving carries about 0.5 g more protein (beef liver has 24.7 g per 3 oz cooked).
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