A typical 3 oz cooked serving of dungeness crab contains 19 grams of protein (22.3 g per 100 g), which makes it a very good source of protein. That covers roughly 38% of the 50 g reference Daily Value, so it can anchor a high-protein meal for the day.
About 81% of the calories in dungeness crab come from protein, which makes it extremely 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 121 seafood in the database, dungeness crab ranks 72nd by protein per serving, and 183rd out of all 796 foods on the site. Set against carp, another seafood entry in the database, a serving carries about 0.5 g less protein (carp has 19.5 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.
Source: USDA FoodData Central #172007 - "Crustaceans, crab, dungeness, cooked, moist heat" (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
Dungeness crab protein FAQ
How much protein is in dungeness crab per 100 g?
Dungeness crab has 22.3 g of protein per 100 g. A typical 3 oz cooked serving (85 g) provides 19 g.
Is dungeness crab a complete protein?
Yes. Dungeness crab 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.
How much of the Daily Value does a serving of dungeness crab cover?
A 3 oz cooked serving of dungeness crab contains 19 g of protein, about 38% of the 50 g reference Daily Value.
Is dungeness crab a good source of protein?
Dungeness crab is a very good source of protein, and about 81% of its calories come from protein, which makes it extremely protein-dense. Set against carp, another seafood entry in the database, a serving carries about 0.5 g less protein (carp has 19.5 g per 3 oz cooked).