Beef, top sirloin, steak, separable lean and fat, trimmed to 1/8" fat, choice, cooked, broiled
Whole food · Beef Products
Photo: Wikipedia
A lean, robust cut from the rear of the cow, top sirloin steak is broiled to a tender, juicy finish with a deep, beefy flavor. Its firm texture and satisfying chew make it a staple for high-protein, low-carb meals, delivering a substantial 26.8g of protein per 100g with virtually no carbohydrates. The 1/8-inch fat trim provides just enough marbling for richness without excessive calories, making it a favorite for health-conscious meat lovers.
Calorie split: 43% protein · 0% carbs · 57% fat
↓ Full nutrition💚 Why it's loved
People adore top sirloin for its perfect balance of tenderness and robust beef flavor, making it a go-to for quick weeknight dinners and weekend grills alike. Its versatility shines in everything from simple salt-and-pepper steaks to complex marinades, embodying the classic American steakhouse experience.
⚠️ Watch-outs & how to enjoy it better
While lean, the 15.75g of fat per 100g can be a concern for those monitoring saturated fat intake, and the high protein content may strain kidneys in individuals with pre-existing conditions. To mitigate, pair with fiber-rich vegetables like broccoli or asparagus to slow digestion, and practice portion control by sticking to a 118g serving. Opt for grass-fed beef to improve the fat profile with more omega-3s.
Key benefits
- Excellent source of complete protein for muscle repair and satiety
- Naturally zero carbohydrates, ideal for keto and low-carb diets
- Rich in iron, zinc, and B vitamins (especially B12) for energy metabolism
- Provides conjugated linoleic acid (CLA) from grass-fed sources
- High in selenium, an antioxidant that supports thyroid function
🍽️ Popular dishes
🌍 Where it's eaten
💡 Did you know?
The sirloin cut gets its name from the French 'sur le groin,' meaning 'above the groin,' referring to its anatomical location on the cow, not a royal 'sir' as popularly believed.
Full nutrition (USDA data · scales with serving)
| Water | 56.8 g |
| Energy | 257 kcal |
| Energy | 1073 kj |
| Protein | 26.8 g |
| Total lipid (fat) | 15.8 g |
| Ash | 1.1 g |
| Carbohydrate, by difference | 0.00 g |
| Fiber, total dietary | 0.00 g |
| Total Sugars | 0.00 g |
| Calcium, Ca | 18.0 mg |
| Iron, Fe | 1.8 mg |
| Magnesium, Mg | 22.0 mg |
| Phosphorus, P | 201 mg |
| Potassium, K | 327 mg |
| Sodium, Na | 54.0 mg |
| Zinc, Zn | 4.8 mg |
| Copper, Cu | 0.09 mg |
| Manganese, Mn | 0.01 mg |
| Selenium, Se | 29.0 ug |
| Vitamin C, total ascorbic acid | 0.00 mg |
| Thiamin | 0.07 mg |
| Riboflavin | 0.12 mg |
| Niacin | 7.3 mg |
| Pantothenic acid | 0.53 mg |
| Vitamin B-6 | 0.53 mg |
| Folate, total | 8.0 ug |
| Folic acid | 0.00 ug |
| Folate, food | 8.0 ug |
| Folate, DFE | 8.0 ug |
| Choline, total | 102 mg |
| Betaine | 13.4 mg |
| Vitamin B-12 | 1.8 ug |
| Vitamin B-12, added | 0.00 ug |
| Vitamin A, RAE | 0.00 ug |
| Retinol | 0.00 ug |
| Carotene, beta | 0.00 ug |
| Carotene, alpha | 0.00 ug |
| Cryptoxanthin, beta | 0.00 ug |
| Vitamin A, IU | 0.00 iu |
| Lycopene | 0.00 ug |
| Lutein + zeaxanthin | 0.00 ug |
| Vitamin E (alpha-tocopherol) | 0.46 mg |
| Vitamin E, added | 0.00 mg |
| Tocopherol, beta | 0.00 mg |
| Tocopherol, gamma | 0.00 mg |
| Tocopherol, delta | 0.00 mg |
| Vitamin K (phylloquinone) | 1.6 ug |
| Alcohol, ethyl | 0.00 g |
| Caffeine | 0.00 mg |
| Theobromine | 0.00 mg |
Fat & fatty acid profile (per 100g)
| Fatty acids, total saturated | 6.2 g |
| SFA 4:0 | 0.00 g |
| SFA 6:0 | 0.00 g |
| SFA 8:0 | 0.00 g |
| SFA 10:0 | 0.04 g |
| SFA 12:0 | 0.04 g |
| SFA 14:0 | 0.48 g |
| SFA 16:0 | 3.7 g |
| SFA 18:0 | 1.9 g |
| Fatty acids, total monounsaturated | 6.6 g |
| MUFA 16:1 | 0.59 g |
| MUFA 18:1 | 5.9 g |
| MUFA 20:1 | 0.02 g |
| MUFA 22:1 | 0.00 g |
| Fatty acids, total polyunsaturated | 0.58 g |
| PUFA 18:2 | 0.41 g |
| PUFA 18:3 | 0.14 g |
| PUFA 18:4 | 0.00 g |
| PUFA 20:4 | 0.04 g |
| PUFA 20:5 n-3 (EPA) | 0.00 g |
| PUFA 22:5 n-3 (DPA) | 0.00 g |
| PUFA 22:6 n-3 (DHA) | 0.00 g |
| Cholesterol | 96.0 mg |
Amino acid profile (per 100g)
| Tryptophan | 0.18 g |
| Threonine | 1.1 g |
| Isoleucine | 1.3 g |
| Leucine | 2.2 g |
| Lysine | 2.4 g |
| Methionine | 0.73 g |
| Cystine | 0.36 g |
| Phenylalanine | 1.1 g |
| Tyrosine | 0.89 g |
| Valine | 1.4 g |
| Arginine | 1.8 g |
| Histidine | 0.89 g |
| Alanine | 1.7 g |
| Aspartic acid | 2.5 g |
| Glutamic acid | 4.2 g |
| Glycine | 1.7 g |
| Proline | 1.3 g |
| Serine | 1.1 g |
| Hydroxyproline | 0.29 g |
FAQ
Is top sirloin steak a lean cut?
Yes, with the 1/8-inch fat trim, it is considered a lean cut, providing about 15.75g of fat per 100g, which is moderate compared to fattier cuts like ribeye.
How does broiling affect the nutritional profile?
Broiling is a dry-heat cooking method that renders some fat, slightly reducing the fat content while preserving protein and minerals. It also avoids adding extra fats from oils or butter.
Can I eat this on a low-carb diet?
Absolutely, as it contains 0g of carbs, it fits perfectly into keto, Atkins, or other low-carb dietary plans.
What is the best way to cook it for tenderness?
Broiling at high heat for a short time (3-4 minutes per side for medium-rare) and letting it rest for 5-10 minutes before slicing helps retain juices and tenderness.
Nutrient density (calculated · NRF9.3)
Nutrient Rich Foods index: beneficial nutrients (protein, fiber, vitamins, minerals) minus saturated fat, added sugar & sodium, per 100 kcal.
NRF9.3 index — Fulgoni, Keast & Drewnowski, 2009. Computed from USDA nutrients.
Weight-loss friendliness (composite index)
Energy density 2.57 kcal/g · 42% calories from protein · 0.0 g fiber · 0.0 g sugar per 100 g.
Composite of energy density (Rolls et al., 1999), protein & fiber satiety, minus sugar. A calculated heuristic — ranks satiety-per-calorie, not a clinical measure.
Dietary load (calculated from USDA values)
Potential renal acid load. Positive = acid-forming, negative = alkaline-forming.
Sodium-to-potassium ratio: 0.17 (lower is better — aim for ≤ 1)
Sodium:potassium per WHO potassium guidance. Computed from USDA nutrients.