A typical 3 oz cooked serving of chicken gizzards contains 25.8 grams of protein (30.4 g per 100 g), which makes it an excellent source of protein. That covers roughly 52% of the 50 g reference Daily Value, so it can anchor a high-protein meal for the day.
About 79% of the calories in chicken gizzards 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 133 meats in the database, chicken gizzards ranks 17th by protein per serving, and 27th out of all 796 foods on the site. Set against chicken breast with skin, another meat entry in the database, a serving carries about 0.5 g more protein (chicken breast with skin has 25.3 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 #171457 - "Chicken, gizzard, all classes, cooked, simmered" (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
Chicken gizzards protein FAQ
How much protein is in chicken gizzards per 100 g?
Chicken gizzards has 30.4 g of protein per 100 g. A typical 3 oz cooked serving (85 g) provides 25.8 g.
Is chicken gizzards a complete protein?
Yes. Chicken gizzards 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 chicken gizzards cover?
A 3 oz cooked serving of chicken gizzards contains 25.8 g of protein, about 52% of the 50 g reference Daily Value.
Is chicken gizzards a good source of protein?
Chicken gizzards is an excellent source of protein, and about 79% of its calories come from protein, which makes it extremely protein-dense. Set against chicken breast with skin, another meat entry in the database, a serving carries about 0.5 g more protein (chicken breast with skin has 25.3 g per 3 oz cooked).