A typical 1 oz serving of parmesan cheese contains 10 grams of protein (35.8 g per 100 g), which makes it a good source of protein. That covers roughly 20% of the 50 g reference Daily Value, so it adds toward your protein total for the day.
Protein accounts for roughly 37% of the calories in parmesan cheese, making it very 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, parmesan cheese ranks 17th by protein per serving, and 310th out of all 796 foods on the site. Set against kefir, another dairy food entry in the database, a serving carries about 1.2 g more protein (kefir has 8.8 g per 1 cup).
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 28 g. The per-100 g figure lets you compare it directly against any other food here, whatever its serving.
Source: USDA FoodData Central #170848 - "Cheese, parmesan, hard" (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
Parmesan cheese protein FAQ
How much protein is in parmesan cheese per 100 g?
Parmesan cheese has 35.8 g of protein per 100 g. A typical 1 oz serving (28 g) provides 10 g.
Is parmesan cheese a complete protein?
Yes. Parmesan cheese 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 parmesan cheese cover?
A 1 oz serving of parmesan cheese contains 10 g of protein, about 20% of the 50 g reference Daily Value.
Is parmesan cheese a good source of protein?
Parmesan cheese is a good source of protein, and about 37% of its calories come from protein, which makes it very protein-dense. Set against kefir, another dairy food entry in the database, a serving carries about 1.2 g more protein (kefir has 8.8 g per 1 cup).