A typical steak ranges from about 145 to 250 calories per 3.5 ounces (100 grams) of raw meat, depending on the cut. That means a standard 8-ounce steak lands somewhere between 330 and 570 calories before you add any cooking fat. The cut you choose matters far more than most people expect.
Calories by Cut
The calorie gap between steak cuts comes down to one thing: intramuscular fat, the marbling you see streaked through the meat. More marbling means more flavor, but also significantly more calories per bite. Here’s how the most popular cuts compare, based on USDA data for 3.5 ounces (100 grams) of raw beef:
- Flank steak: 145 calories, 6 g fat
- Top sirloin: 189 calories, 11 g fat
- Strip steak (top loin): 224 calories, 15 g fat
- Tenderloin (filet mignon): 249 calories, 18 g fat
Flank steak is the leanest mainstream option, coming in at nearly 100 fewer calories per serving than tenderloin. That difference scales up fast with portion size. An 8-ounce flank steak has roughly 330 calories, while the same weight of filet mignon has about 565.
Ribeye, one of the most popular cuts, isn’t listed among the select-grade data above because its calorie count varies widely with marbling. Expect a raw ribeye to fall in the 250 to 290 calorie range per 3.5 ounces, making it one of the highest-calorie cuts you’ll find at a steakhouse.
How Portion Size Changes the Math
Restaurant steaks are rarely 3.5 ounces. A “small” steakhouse portion is typically 8 ounces, and 12- to 16-ounce cuts are common. To estimate calories for any portion, multiply the per-100g number by the weight of your steak in grams, then divide by 100. For quick reference: 8 ounces is about 227 grams, and 12 ounces is about 340 grams.
A 12-ounce top sirloin, for example, works out to roughly 640 calories from the meat alone. A 16-ounce ribeye can easily cross 1,100 calories before any butter or oil touches the pan.
What Cooking Adds
Grilling a steak over an open flame adds essentially zero calories because there’s no cooking fat involved. Some fat actually renders out and drips away during grilling, slightly reducing the final calorie count. Pan-searing is a different story. A typical pan-seared 8-ounce ribeye cooked with two pats of butter comes to around 730 calories total, with 57 grams of fat. That butter alone can add 70 to 100 calories depending on how generous you are.
If you’re tracking calories closely, the cooking method is worth paying attention to. Grilling, broiling, or using a minimal amount of high-heat oil keeps the calorie count closest to the raw numbers. Butter-basting, while delicious, can add 100 or more calories per steak.
USDA Grades and Marbling
The USDA grades beef as Prime, Choice, or Select based on the amount of marbling in the meat. Prime has the most fat running through it, Select has the least, and Choice falls in between. The calorie figures listed earlier in this article reflect Select grade, which is the leanest. If you’re buying Prime ribeye from a butcher or ordering at a high-end steakhouse, you can expect noticeably more calories per ounce than the same cut in Select grade, sometimes 15 to 20% more, purely from the additional fat.
Most grocery store beef is Choice grade. If the label doesn’t specify, it’s almost certainly Choice or Select.
Grass-Fed vs. Grain-Fed
Grass-fed cattle take longer to reach their target weight, which results in leaner meat with less marbling. That translates to modestly fewer calories per serving compared to grain-fed beef of the same cut. The nutritional profiles are otherwise similar, though grass-fed beef contains roughly twice the omega-3 fatty acids, about 30 milligrams more per serving. That’s a real but small difference. If you’re choosing grass-fed for calorie reasons alone, the savings are minimal.
Does Trimming the Fat Help?
Trimming the visible fat cap off the outside of a steak before eating it seems like it should reduce calories meaningfully, but research from Agriculture and Agri-Food Canada found that cooking a ribeye with the fat cap on versus off didn’t significantly change the calorie content of the finished steak. The reason: most of the calories in a well-marbled cut come from the fat inside the muscle, not the strip around the edge. Trimming does remove some fat and calories, but it won’t dramatically change the numbers for fatty cuts. For leaner cuts like flank or sirloin, there’s very little external fat to trim in the first place.
Protein and Satiety
Steak is one of the most protein-dense foods available, which is part of why it keeps you full for hours. A typical 8-ounce steak delivers 40 to 55 grams of protein depending on the cut. That protein also costs your body energy to digest. The thermic effect of protein, meaning the calories your body burns just breaking it down, runs between 15 and 30% of the protein calories consumed. So if your steak provides 200 calories from protein, your body uses 30 to 60 of those calories during digestion.
This is one reason steak can be a practical choice even during calorie restriction. The high protein content helps preserve muscle mass, and the thermic effect means the “net” calorie impact is lower than the label suggests.
Bone-In Steaks and Actual Edible Weight
If you’re weighing a bone-in ribeye or T-bone on a kitchen scale, remember that the bone isn’t food. A bone-in steak typically yields 15 to 20% less edible meat than its total weight. So a 16-ounce bone-in ribeye gives you roughly 13 ounces of actual meat. Calculate your calories based on the meat weight, not the total weight printed on the package.
Cooking also reduces weight through moisture loss. USDA data shows a bone-in ribeye retains about 86% of its raw weight after cooking, while a boneless ribeye retains around 82 to 84%. The calories don’t disappear with the water, though. A cooked steak has the same calories as the raw version (minus whatever fat rendered out), just packed into a smaller, denser piece of meat. If you’re weighing cooked steak to track calories, use cooked-weight nutritional data rather than raw-weight data to avoid underestimating.