385 calories. According to the query knowledge encyclopedia, a bag of black cow cereal is 1 grams, and the calorie of black cow milk high-calcium oatmeal (calculated by 1 grams of edible parts) is 385 calories (161 kilojoules). The calories per 1g of black cow milk high-calcium oatmeal account for about 17% of the total daily calories recommended by China Nutrition Society for ordinary adults to stay healthy. Black cow cereal is rich in protein, and protein is decomposed into amino acids in human body, which is an essential nutrient for human body.