The calorie content in beef varies based on its form. Raw ground beef contains higher number of calories as compared to the roast beef. 1 oz of lean roast beef contains 46 calories, 3 oz of lean roast beef contains 138 calories, 3 and a half oz of lean roast beef has 161 calories, 5 oz of lean roast beef contains 230 calories, 6 oz of lean roast beef has 276 calories, 7 oz of lean roast beef has 322 calories and 8 oz of lean roast beef contains 369 calories.
The calorie content in 1 oz of lean, grass fed raw ground beef has 54 calories, 1 oz of 85 percent lean, raw, ground beef contains 60-61 calories, 1 oz of 80 percent lean, raw, ground beef contains 72 calories and 1 oz of 75 percent lean, raw, ground beef has 83 calories. Since beef is not had as a whole and cut into pieces for serving the calories you are consuming on eating it also depends on the cut you are consuming as certain cuts may have more number of calories and fat as compared to others. If you are calorie conscious and do not want to put on weight it is essential for you to learn as to which all portions of beef contain lesser amount of calories.
It is recommended not to have more than 3 oz of beef at a time. Whichever cut of beef you choose, consume only the recommended 3 oz of the beef stick and not eat the whole of it. Eye round, top round and flank steaks have a low calorie count per serving as compared to the other portions. A broiled top round cut portion of beef which weighs around 3 oz contains approximately 160 calories out of which 50 calories come from fat. A broiled eye round streak has approximately 170 calories in each serving and a flank steak of 3 oz contains around 180 calories.