Calories In An Onion

Onions are a kitchen staple, adding flavor and nutrition to countless dishes. But have you ever wondered about the calories in an onion? Let’s break it down.

A medium-sized onion (about 150g) contains approximately 60 calories. These calories primarily come from natural carbohydrates, with an onion offering around 14g of carbs, 2g of fiber, and minimal amounts of fat and protein. Onions are also rich in nutrients like vitamin C, B vitamins, and antioxidants, making them a low-calorie and nutrient-dense option to enhance meals while keeping your diet in check.

Whether you’re sautéing them for a stir-fry, roasting them as a side, or adding them raw to salads, onions are a guilt-free addition to your food. If you’re watching your calorie intake or trying to balance your macros, knowing the nutritional value of an onion can help you make informed choices in the kitchen.

Tracking calories from whole foods like onions or packaged items doesn’t have to be a chore. With the PowerDreamer AI Photo Calorie Counter, you can easily log your daily calories and nutrients—just snap a photo of your food or the nutrition label, and let the AI do the rest! Start tracking smarter today.