Cheddar cheese is a solid protein source, delivering about 6 to 7 grams of protein per one-ounce (28g) serving. That puts it roughly on par with a large egg. But cheddar is not a lean protein source: it comes with 9 grams of fat and 110 calories in that same ounce, so the protein-to-calorie ratio is moderate rather than exceptional.
How Much Protein Is in Cheddar
A standard one-ounce serving of cheddar cheese contains about 6 grams of protein and 110 calories. Scale that up to a more realistic portion, say 65 grams (a little over two ounces), and you’re getting roughly 20 grams of protein. That’s a meaningful amount, comparable to a small chicken breast or a cup of Greek yogurt. The difference is that the same 65-gram portion of cheddar also carries around 20 grams of fat, 5 grams of saturated fat per ounce, and about 180 milligrams of sodium per ounce.
If you’re tracking macros, the key number to keep in mind is that only about 22% of cheddar’s calories come from protein. The rest is almost entirely fat, since cheddar has virtually no carbohydrates. Compare that to chicken breast, where over 80% of calories come from protein, or cottage cheese, where the ratio sits around 50 to 60%. Cheddar delivers real protein, but it’s bundled with a lot of calories from fat.
The Quality of Cheddar’s Protein
What cheddar lacks in protein density per calorie, it partly makes up for in protein quality. Dairy proteins contain all nine essential amino acids your body can’t make on its own. Cheddar is particularly rich in leucine, the amino acid most directly responsible for triggering muscle repair and growth. About 10% of the protein in cheddar cheese is leucine, which is a high proportion even among animal proteins.
A study published in the journal Nutrients measured what happens after people eat cheddar cheese and found that circulating amino acids rose meaningfully, reaching levels relevant for muscle protein synthesis. In practical terms, the protein you get from cheddar is highly usable. Your body absorbs and utilizes nearly all of it, unlike some plant-based protein sources where a portion passes through undigested.
Cheddar vs. Other Protein Sources
A one-ounce serving of cheddar and one large egg contain almost identical protein: about 6 to 7 grams each. But the egg has roughly 70 calories compared to cheddar’s 110, making the egg more protein-efficient. Here’s how cheddar stacks up against other common foods per ounce:
- Cheddar cheese: 6-7g protein, 110 calories
- Large egg (about 50g): 6g protein, 70 calories
- Chicken breast (1 oz): 9g protein, 46 calories
- Cottage cheese (1 oz): 3.5g protein, 25 calories
Among cheeses specifically, cheddar falls in the middle of the pack. Harder, aged cheeses like parmesan tend to pack more protein per ounce because they’ve lost more moisture during aging, concentrating the protein. Softer cheeses like brie or cream cheese contain less. If maximizing protein per bite of cheese is your goal, parmesan or other hard grating cheeses are a better pick.
Where Cheddar Fits in Your Diet
Cheddar works best as a supplemental protein source rather than a primary one. Melting an ounce over vegetables, adding it to eggs, or eating a few slices with an apple gives you a meaningful protein bump alongside the meal. Trying to hit your daily protein target primarily through cheddar would mean consuming a lot of saturated fat and sodium in the process.
For someone aiming at 100 to 150 grams of protein per day, an ounce or two of cheddar can contribute 6 to 14 grams without much thought. That’s useful, especially as a snack. Pairing cheddar with a piece of fruit or some whole-grain crackers gives you protein, fat, and carbohydrates together, which slows digestion and keeps you fuller longer than any of those foods alone.
If you’re choosing cheddar specifically for protein, sharp or extra-sharp varieties are slightly more concentrated because they’ve aged longer and lost a bit more water. Reduced-fat cheddar shaves off some calories while keeping most of the protein intact, improving the protein-to-calorie ratio. It won’t melt quite the same way, but nutritionally it’s a reasonable trade-off if protein efficiency matters to you.