Food database · Meat & poultry
Protein content
A 3 oz cooked serving of prime rib contains 19.6 g of protein - a very good source of protein, about 39% of the 50 g Daily Value.
Share of this food's calories that come from protein - it is moderately protein-dense.
| Serving | 3 oz cooked (85 g) |
|---|---|
| Protein per serving | 19.6 g |
| Protein per 100 g | 23 g |
| Calories per serving | 302 kcal |
| Protein density | 26% of calories |
| Share of 50 g Daily Value | 39% |
| Protein quality | Complete protein |
| Category | Meat & poultry |
| Food type | Whole food |
| USDA record | FoodData Central #168682 |
A typical 3 oz cooked serving of prime rib contains 19.6 grams of protein (23 g per 100 g), which makes it a very good source of protein. That covers roughly 39% of the 50 g reference Daily Value, so it can anchor a high-protein meal for the day.
Around 26% of the calories in prime rib come from protein, so it is moderately protein-dense. It contributes to a day's protein total, but the bulk of what it delivers is energy rather than amino acids - treat it as a contributor alongside a denser source, not as the protein in a meal.
Among the 133 meats in the database, prime rib ranks 94th by protein per serving, and 170th out of all 796 foods on the site. Set against sweetbreads, another meat entry in the database, a serving carries about 0.5 g more protein (sweetbreads has 19.1 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.
Sold with its fat cap intact, so it delivers noticeably less protein per ounce than a trimmed round cut.
Source: USDA FoodData Central #168682 - "Beef, rib, large end (ribs 6-9), separable lean and fat, trimmed to 1/8" fat, all grades, cooked, roasted" (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
Prime rib has 23 g of protein per 100 g. A typical 3 oz cooked serving (85 g) provides 19.6 g.
Yes. Prime rib 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 prime rib contains 19.6 g of protein, about 39% of the 50 g reference Daily Value.
Prime rib is a very good source of protein, and about 26% of its calories come from protein, which makes it moderately protein-dense. Set against sweetbreads, another meat entry in the database, a serving carries about 0.5 g more protein (sweetbreads has 19.1 g per 3 oz cooked).
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