How Many Calories Does A 6 Oz Sirloin Steak Have? | Smart Plate Math

What Changes The Count In A Six-Ounce Sirloin

Calories in a steak come from protein and fat. Protein lands near four calories per gram, while fat sits near nine. A leaner slice carries fewer calories at the same cooked weight, and extra pan fat nudges the number up. Water loss during cooking also matters; less water means each ounce on the plate holds more energy.

Food databases show a cooked top sirloin near 206 kcal per 100 g when broiled and trimmed, which maps to roughly 350–360 kcal for a six-ounce plate. Those same entries detail protein in the mid-40-gram range for this size, with fat varying by trim and grade. These values align with standard USDA-based listings found in FoodData Central sirloin (cooked).

Raw Weight Vs. Cooked Weight

Six ounces raw is not the same as six ounces on your plate. Heat drives off moisture and melts some fat. A piece that starts at eight ounces raw can land near six ounces after grilling, depending on doneness and marbling. That shift explains why two steaks that look similar can post different numbers at equal cooked weights.

Trim, Grade, And Marbling

“Trimmed to 0″ fat” means the surface cap is removed. Marbling still stays inside the muscle, and that’s where a lot of flavor comes from. Choice or Prime grades tend to carry more marbling than Select. More marbling usually means more calories per cooked ounce.

Calories By Cut, Method, And Trim (Per 6 Oz Cooked)

The ranges below show how a basic portion shifts with method and fat. Use them as a quick guide when logging meals or planning macros.

Cut & Method	Approx. Calories	Notes
Top Sirloin, Broiled, Trimmed	~350–360 kcal	Aligned with USDA-based listings for broiled steak.
Top Sirloin, Grilled, Lean-Only	~310–330 kcal	Surface fat removed; higher protein ratio.
Top Sirloin, Pan-Seared With Butter	~420–460 kcal	Added fat and pan juices push energy higher.
Top Sirloin, Well-Done	~360–390 kcal	More water loss concentrates calories per ounce.
Top Sirloin, Medium	~340–360 kcal	Moderate water loss; typical restaurant plate.
Sirloin Tip, Broiled, Trimmed	~330–350 kcal	Slightly leaner muscle; similar protein.

Portion Logging That Doesn’t Mislead You

Weigh cooked meat if you can. If you only know the raw size, assume around 25–30% loss on the grill for a medium finish. Logging accuracy improves once you set your daily calorie needs; that keeps side dishes and sauces in check.

Protein, Fat, And What Your Plate Delivers

A six-ounce cooked portion of broiled top sirloin commonly lands near 45–48 g protein with 20–24 g fat when trimmed. That’s a sturdy serving of the amino acids your body uses to maintain muscle. Fat varies the most. A buttery pan finish, a thicker fat edge, or a higher grade will all move that number.

How Cooking Method Shifts Macros

Broiling or grilling: Fat drips away, so calories per cooked ounce trend lower than pan styles.
Pan-searing: Some rendered fat stays in the pan and on the plate, and cooks often add butter or oil, which bumps calories.
Sous vide then sear: Moisture loss can be modest before the surface sear; final macros land between grill and pan.

Doneness And Water Loss

Rare holds more water than well-done, so a rare slice shows fewer calories per cooked ounce. Total energy in the original piece doesn’t change, but the concentration per ounce on the plate does. That’s why the same steak can clock different numbers depending on how it’s finished.

Close Variant: Six-Ounce Sirloin Calories By Cooking Style

This section puts typical numbers side by side so you can swap methods without guessing. Use it with the next macro table to plan meals that hit your targets.

For nutrient baselines, the USDA-derived entry for cooked top sirloin provides per-100-gram values you can scale to your plate; see FoodData Central sirloin (cooked). For heart-smart limits on saturated fat, the AHA recommendation keeps intake under 6–10% of calories, which helps set sauce and side choices.

Smart Swaps That Keep Flavor

• Use a hot grill grate and a light brush of oil on the meat, not the pan, to limit added fat.
• Finish with a squeeze of lemon, a spoon of salsa verde, or a parsley-garlic chimichurri made with measured olive oil.
• Pick sides that earn their spot: roasted potatoes with skins, grilled asparagus, or a tomato-cucumber salad.

Macros And Calories For Common Portions

Numbers below assume trimmed top sirloin, broiled, medium. Adjust ±10–15% across methods and marbling levels.

Portion (Cooked)	Approx. Calories	Protein • Fat
4 oz	~240 kcal	~32 g • ~14 g
6 oz	~360 kcal	~46 g • ~21 g
8 oz	~480 kcal	~62 g • ~28 g

How To Log Restaurant Plates

Steakhouses season generously and often baste. If the plate glistens with butter or carries a rich pan sauce, use the “rich prep” estimate from the card. If the steak sits dry with grill marks and no buttery sheen, use the “typical plate” line. Round up if the cut looks thicker than your usual home slice.

Practical Ways To Hit Goals

• Cut size: Split an entrée with a friend or save half for next day’s lunch.
• Build the plate: Add a fiber-heavy side and a light sauce to keep calories predictable and meals satisfying.
• Protein timing: If you train, aim for a solid protein serving within a couple of hours of your workout.

Fat Quality, Saturated Fat, And Balance

Red meat delivers both saturated and unsaturated fats. Trim and cooking style change the mix. To keep heart health on track, many diners stay under about 13 g saturated fat on a 2,000-calorie day, consistent with the AHA saturated fat advice. That still leaves room for flavor when you pair steak with olive-oil-based sauces and plant sides.

When Lean Matters Most

Working toward lower daily calories? A lean-only trim gives you the same protein with fewer calories. That helps you stay inside your plan and frees up room for sides. If you track macros in an app, tag the entry with “lean only” or choose the database line that matches a trimmed cut.

Cook Like You Mean It

Bring meat to room temp while you heat the grill. Pat dry, season, then sear hard to build crust without lingering in the pan. Let it rest a few minutes to keep juices inside the slice. Those small steps help you keep portions juicy without leaning on extra butter.

Practical Answers To Common Plate Questions

Does A Butter Finish Change A Six-Ounce Count?

Yes. A tablespoon of butter adds about 100 calories. If the pan sauce coats each slice, your plate can jump from the mid-300s to the low-400s fast.

What If The Steak Is Bone-In?

Weighing the bone skews the math. If you only have a total plate weight, subtract an estimate for the bone or switch to a visual guide and log by size of lean slice.

Is Medium Rare Lower Than Well-Done?

Per ounce on the plate, medium rare often carries fewer calories than the same steak cooked to well-done because it holds more water. Total energy from the original cut doesn’t change; the concentration per cooked ounce does.

Bring It All Together

A six-ounce broiled slice usually lands near 360 calories with protein in the high-40-gram range. Trim surface fat to lean out the plate, go easy on butter, and let sides carry extra flavor. Want a tasty template to start the day strong? Try our high-protein breakfast ideas for balance across the week.