Protein in Greek Yogurt: By Brand, Fat Level, and How It Compares to Regular Yogurt

The quick answer: A 6 oz (170g) serving of plain nonfat Greek yogurt contains approximately 17g of protein with just 100 calories. Greek yogurt has roughly double the protein of regular yogurt because the straining process removes whey liquid, concentrating the protein. It is one of the most convenient, versatile, and protein-dense dairy foods available.

How Much Protein Is in Greek Yogurt?

Greek yogurt is made by straining regular yogurt to remove most of the liquid whey, which concentrates the protein and creates a thicker, creamier texture. Here is the protein content by serving size for plain nonfat Greek yogurt:

At 5.9 calories per gram of protein, nonfat Greek yogurt is remarkably efficient — comparable to chicken breast in protein-to-calorie ratio but requiring zero cooking.

Nonfat vs Low-Fat vs Full-Fat Greek Yogurt

All three fat levels have similar protein, but the calorie and fat differences are significant:

The protein difference between nonfat and whole milk is only 2g per serving, but the calorie difference is 60 calories. For those focused on maximizing protein per calorie, nonfat is the clear winner. However, full-fat Greek yogurt is creamier, more satiating, and contains fat-soluble vitamins (A, D, E, K) that nonfat versions lack.

Plain vs Flavored Greek Yogurt

Flavored Greek yogurt is significantly different nutritionally:

Flavored varieties typically have 3-6g less protein per serving because the added sugar, fruit, and flavorings displace some of the strained yogurt. They also contain 11-15g of added sugar — nearly 3-4 teaspoons per serving. If you want the flavor without the added sugar, buy plain Greek yogurt and add your own fruit, honey, or vanilla extract.

Greek Yogurt vs Regular Yogurt vs Icelandic Skyr

These three dairy products are often confused. Here is a direct comparison per 6 oz serving (plain, nonfat):

Icelandic skyr edges out Greek yogurt in protein content and density. It is technically a cheese (not a yogurt), made with skim milk and strained extensively. For pure protein maximization, skyr is the winner by a small margin. Regular yogurt has about half the protein of Greek but more calcium because the whey (which contains calcium) is not removed.

Top Brands Ranked by Protein

Protein content varies significantly between brands. Here are popular Greek yogurt and skyr brands ranked by protein per serving:

Fage Total 0% is the protein champion among widely available brands, delivering 20g of protein in a 7 oz container at just 90 calories. Among single-serve options at 5.3 oz, Siggi's and Stonyfield lead the pack.

Greek Yogurt in High-Protein Meal Plans

Greek yogurt is one of the most versatile protein foods because it works at every meal and as a snack:

High-Protein Breakfast Bowl (35g protein)

Mix 1 cup plain nonfat Greek yogurt (23g) with 1/4 cup granola (3g), 1 tbsp chia seeds (2g), 1 tbsp almond butter (3.5g), and mixed berries. Total: about 35g protein.

Protein-Boosted Smoothie (40g protein)

Blend 1 cup Greek yogurt (23g), 1 scoop protein powder (25g), 1 banana, and ice. This delivers roughly 40g of protein — a full meal replacement.

Savory Dip or Dressing Base

Use plain Greek yogurt as a base for ranch dressing, tzatziki, or curry dip. You get added protein with every dip and drizzle.

Post-Workout Snack (23g protein)

Eat 1 cup of Greek yogurt with a drizzle of honey. Fast-digesting protein without the prep time of cooking meat.

Baking Substitute

Replace sour cream, heavy cream, or mayonnaise with Greek yogurt in recipes for a protein boost with fewer calories.

Greek Yogurt as a Protein Powder Alternative

For people who dislike protein powder, Greek yogurt can fill a similar role:

The protein content is nearly identical. Greek yogurt has the advantage of being a whole food with live probiotics that support gut health, while whey protein is more portable and mixable.

Frequently Asked Questions

How much protein is in a cup of Greek yogurt?

One cup (8 oz / 227g) of plain nonfat Greek yogurt contains approximately 23g of protein. Full-fat versions have about 20g per cup.

Is Greek yogurt a good protein source for building muscle?

Yes. Greek yogurt contains both whey and casein protein, which is an optimal combination for muscle building. Whey is fast-digesting (promoting immediate muscle protein synthesis) while casein is slow-digesting (providing sustained amino acid delivery). This makes Greek yogurt an excellent pre-bedtime snack for muscle recovery.

Can I eat Greek yogurt every day?

Absolutely. Greek yogurt is safe and beneficial to eat daily. The probiotics support digestive health, the protein aids muscle maintenance, and the calcium supports bone health. Studies have consistently linked regular yogurt consumption to improved body composition and metabolic health.

What is the healthiest Greek yogurt?

Plain nonfat or low-fat Greek yogurt with no added sugar is the healthiest option. Look for brands with short ingredient lists (milk, live cultures) and high protein per serving. Fage Total 0%, Siggi's, and Stonyfield are consistently rated among the healthiest options.

Is Greek yogurt better than cottage cheese for protein?

They are comparable. Greek yogurt has about 17g per 6 oz, while cottage cheese has about 14g per 1/2 cup (4 oz). Per calorie, they are very similar. The main difference is texture and taste preference — Greek yogurt is smooth and tangy, cottage cheese is lumpy and mild.

Does Greek yogurt have probiotics?

Yes. Look for "live and active cultures" on the label. Most Greek yogurts contain Lactobacillus and Streptococcus thermophilus strains. Heat-treated yogurts (some shelf-stable varieties) may not contain live probiotics.

How long does Greek yogurt last after opening?

Opened Greek yogurt lasts 5-7 days in the refrigerator when stored with the lid tightly closed. Unopened, it typically lasts 1-2 weeks past the printed date if kept refrigerated.

Can lactose-intolerant people eat Greek yogurt?

Many can. The straining process removes a significant amount of lactose (the milk sugar that causes symptoms). Greek yogurt contains about 40-50% less lactose than regular yogurt. Many lactose-intolerant individuals tolerate Greek yogurt well, especially in small servings.

Track Your Greek Yogurt Macros Instantly

With so many brands, fat levels, and flavored options, the protein in your Greek yogurt can vary by 50% or more. Mealift has a comprehensive database of Greek yogurt brands so you can scan the barcode or search by name and get exact macros for the specific product you are eating.