Sirloin steak is a fantastic keto protein: zero carbs, solid protein, and a leaner profile than ribeye. Add butter, ghee, or a fatty sauce to optimize your keto fat ratio while keeping costs reasonable.
Is Sirloin Steak Keto?

Sirloin steak is a fantastic keto protein: zero carbs, solid protein, and a leaner profile than ribeye. Add butter, ghee, or a fatty sauce to optimize your keto fat ratio while keeping costs reasonable.
Each 100g serving delivers 0g net carbs, making it easy to keep things keto-friendly.
- Net carbs (100g)0g
- Protein (100g)27g
- Fat (100g)11g
- Keto verdictKeto-friendly
NUTRITION FACTS
Per 100g (raw)
Source: USDA FoodData Central
WHY IT'S KETO-FRIENDLY
- Zero carbs: Ideal macronutrient profile for strict keto
- High-quality protein (27g/serving) supports muscle preservation
- Leaner than rib cuts—easy to hit a calorie target
- Budget-friendly versus premium steaks
- Versatile across grilling, pan-searing, or broiling
- Customizable fat: finish with butter/ghee or a fatty sauce for perfect keto macros
HEALTH BENEFITS
- Complete protein aids muscle building and recovery
- Rich in heme iron for superior absorption
- Provides selenium for thyroid and antioxidant support
- High in niacin (B3) to support energy metabolism
- Supplies phosphorus for bone health and ATP production
- Includes glycine (especially if cooked with connective tissue) to support collagen and joints
PREPARATION SUGGESTIONS
SEARED AND FINISHED
Hard sear in a hot skillet, then finish in a 400°F oven. Aim for medium-rare (130–135°F) and rest before slicing to avoid dryness.
MARINATED SIRLOIN
Marinate in olive oil, garlic, red wine vinegar (lower sugar than balsamic), and herbs for 2–4 hours; grill hot and fast.
PEPPERCORN CRUST
Press in crushed peppercorns and salt; sear, then finish with a cognac or cream reduction for a classic steak au poivre vibe.
GRILLED WITH CHIMICHURRI
Grill 4–5 minutes per side over high heat; rest and top with fresh chimichurri (parsley, garlic, olive oil).
GARLIC AND ROSEMARY
Pan-sear with rosemary and garlic, basting with butter or ghee for a rich, aromatic finish.
STEAK SALAD
Slice thinly over mixed greens with avocado and cheese; dress with a creamy keto dressing for a light, filling meal.