Beef Sirloin Nutrition Calculator

Sirloin stands out as one of the most versatile and balanced cuts in the beef case. Sitting comfortably between the rich, highly marbled ribeye and the ultra-lean round cuts, top sirloin offers an excellent middle ground for both flavor and nutrition. A 100-gram raw serving of top sirloin delivers about 183 calories and an impressive 27 grams of protein, while keeping fat relatively low at just 7.6 grams. This high protein-to-fat ratio makes it a favorite among athletes, bodybuilders, and anyone looking to maximize their protein intake without excess calories.

Beyond its macronutrient profile, sirloin is a notable source of essential micronutrients. It provides roughly 1.8mg of iron per 100g raw, along with zinc, selenium, and vitamin B12. Because sirloin is relatively lean, it's best cooked quickly over high heat—such as grilling or pan-searing—and is typically most tender when served medium-rare to medium. Overcooking can lead to a tougher texture due to the lack of protective intramuscular fat.

When budgeting for weekly meal prep, sirloin is often more affordable than premium cuts like tenderloin or strip steak, making it a practical choice for everyday dinners, steak salads, and stir-fries. By using our calculator, you can easily scale these baseline nutritional values to match your exact portion size, whether you're logging a modest 4-ounce serving for lunch or an 8-ounce portion for a post-workout dinner. Understanding sirloin's nutritional balance makes it easier to plan portions and log meals accurately.