Nutrition Facts

.ME

N/A servings per container

Serving size 1 medium onion (110g)

Amount per serving
Calories 44
% Daily Value*
Sodium 4mg 0%
Protein 1.2g 2%
Total Fat 0.1g 0%
Trans Fat 0g
Cholesterol 0mg 0%
Added Sugars 0g 0%
Total Sugars 4.7g
Dietary Fiber 1.9g 7%
Saturated Fat 0.0g 0%
Total Carbohydrate 10.3g 4%
* The % Daily Value (DV) tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

Yellow Onion Calories

A medium yellow onion, weighing about 110 grams, contains approximately 44 calories. This makes it a very low-calorie food, perfect for adding a significant amount of flavor to dishes without increasing the overall energy content. People using a calorie counter or following a specific diet plan often find onions to be a staple ingredient. Understanding the calorie count in basic ingredients like an onion can be helpful for anyone trying to manage their daily intake, whether for weight loss or maintenance.

Macronutrient Breakdown

In a medium yellow onion, you will find about 10.3 grams of total carbohydrates. This includes 1.9 grams of dietary fiber and 4.7 grams of natural sugars. The fiber content contributes to feelings of fullness and supports digestive health. There is virtually no fat and a small amount of protein, around 1.2 grams. This profile makes onions an excellent choice for adding bulk and flavor to low-calorie meals, fitting well into a diet plan that might require a calorie deficit for weight management.

Essential Nutrients

Beyond the basics, yellow onions are a good source of several important vitamins and minerals. They offer a notable amount of Vitamin C, an antioxidant that supports the immune system. They also provide Vitamin B6 and folate, which are crucial for metabolism and cellular growth. Onions are also known for their high concentration of flavonoid antioxidants, particularly quercetin, which has been studied for its anti-inflammatory properties. These nutrients make the humble onion a valuable addition to a healthy, balanced diet.