According to the United States Department of Agriculture (USDA) National Nutrient Database, one raw fennel bulb weighing 234 grams (g) contains: 73 calories. 0.47 g of fat. 2.9 g of protein.Click to see full answer. Beside this, is fennel high in sugar?Fennel seeds have alleviated diabetic properties which helps in fighting against diabetes. Due to its high source of nutrients like vitamin C and Potassium, it helps in lowering the blood sugar levels and also helps to increase insulin reactivity resulting in balancing the sugar.Beside above, how many calories does roasted fennel have? Share on Pinterest Fennel has a range of nutritional benefits. According to the United States Department of Agriculture (USDA) National Nutrient Database, one raw fennel bulb weighing 234 grams (g) contains: 73 calories. 0.47 g of fat. Keeping this in view, how many net carbs are in fennel? Nutrition Facts Calories 70 (292 kJ) Cholesterol 0 mg 0% Sodium 117 mg 5% Total Carbohydrate 16.4 g 5% Dietary Fiber 7 g 28% Is fennel a Superfood? Get to Know This Superfood: Fennel It’s basically calorie-free—just 27 for a cup, chopped—but has as much energy-boosting potassium as a small banana. Mainly, though, fennel is delicious, with a slightly sweet, almost licorice-y flavor.