Question: how many calories in a raw green onions?
Answer: Raw onions are very low in calories, with only 40 calories per 3.5 ounces (100 grams). By fresh weight, they are 89% water, 9% carbs, and 1.7% fiber, with tiny amounts of protein and fat. The main nutrients in 3.5 ounces (100 grams) of raw onions are ( 1 ): Calories: 40.