Broccoli, raw has 31 kcal per 100 g, with 2.6 g of protein, 6.3 g of carbs, and 0.3 g of fat.
kcal per 100 g31
Values are from USDA FoodData Central, Foundation Foods, FDC ID 747447 (opens usda.gov in a new tab). A food you buy can differ: check its label.