One 100 g serving of beef, flank, steak, separable lean and fat, trimmed to 0" fat, all grades, raw has 155 calories, 0 g of carbs, and 0 g of fiber.
Full macro and micronutrient breakdown, plus how this compares across diets, is on the Beef, flank, steak, separable lean and fat, trimmed to 0" fat, all grades, raw nutrition facts page.