Steak contains zero carbohydrates. A 3-ounce serving of sirloin, tenderloin, or ribeye all register 0 grams of carbohydrate according to the USDA. This applies to every standard cut of beef, from chuck to brisket to flank. If you’re counting carbs for keto, low-carb, or blood sugar management, plain steak is one of the safest choices on any menu.
Why Steak Has No Carbs
Muscle tissue in a living animal does contain a small amount of stored sugar in the form of glycogen. But after slaughter, the animal’s blood stops circulating, cutting off the supply of oxygen and glucose to the muscles. The remaining glycogen gets converted into lactic acid through normal biochemical processes. By the time a steak reaches your plate, there is essentially no carbohydrate left in the meat.
The USDA’s nutrient database for retail beef cuts lists every single cut at 0 grams of carbohydrate, 0 grams of fiber, and 0 grams of sugar. These values are classified as “assumed zero,” meaning the amounts are so negligible they don’t register in nutritional testing.
What You Get Instead: Protein and Fat
Steak is almost entirely protein and fat, with the ratio shifting depending on the cut. Per 3-ounce cooked serving:
- Sirloin steak: 26g protein, 12g fat
- Tenderloin (filet mignon): 27g protein, 14g fat
- Ribeye: 27g protein, 16g fat
Leaner cuts like sirloin tip or eye of round will have less fat, while fattier cuts like ribeye or T-bone carry more. But across the board, the carb count stays at zero regardless of the cut.
When Steak Stops Being Zero-Carb
Plain grilled, broiled, or pan-seared steak with just salt and pepper has no carbs. The carbs show up when something gets added to the meat, either before or during cooking.
Marinades are a common source. A single tablespoon of a bottled marinade can contain up to 9 grams of carbohydrate, mostly from honey, sugar, or corn syrup. Teriyaki, balsamic, and BBQ-style marinades tend to be the highest. If you’re using a generous amount across a full steak, that can add 15 to 30 grams of carbs to a meal that would otherwise have none. Dry rubs with brown sugar or sweet paprika blends add smaller but still meaningful amounts.
Breading changes the picture dramatically. A breaded and fried steak (like chicken fried steak) contains roughly 3.5 grams of net carbs per ounce. A full portion can easily reach 15 to 25 grams of carbohydrate just from the flour coating. Restaurant preparations with crusts, glazes, or pan sauces made with flour or cornstarch follow the same pattern.
Beef Jerky Is a Different Story
Dried and cured beef products catch a lot of people off guard. A one-cup serving of beef jerky contains around 10 grams of carbohydrate, with about 8 of those grams coming from sugar. Even a single piece has roughly 2 grams of carbs. That sugar comes from the curing process, where ingredients like brown sugar, soy sauce, and other flavorings get absorbed deep into the meat. The exact count varies by brand, but jerky is never a zero-carb food the way a fresh steak is.
Keeping Your Steak Low-Carb
If your goal is to keep carbs as close to zero as possible, stick with simple preparations. Salt, pepper, garlic powder, butter, and fresh herbs add flavor without carbohydrates. Olive oil, mustard (check the label for honey mustard), and vinegar-based dressings are also safe bets.
Watch for carbs in what goes alongside the steak rather than the steak itself. Baked potatoes, dinner rolls, and corn on the cob can easily add 30 to 50 grams of carbohydrate to a meal. Swapping those sides for roasted vegetables, a side salad, or sautéed mushrooms keeps the full plate in low-carb territory. The steak itself will never be the problem.