How Many Calories Are In Onion Soup?

A serving of Onion Soup (29g) contains 3.5kcal of calories, which is 0% of the recommended daily value based on a 2,000 calorie diet.

Calories measure the energy content of food. Your body needs calories to function, but consuming more than you burn leads to weight gain. When planning your meals, consider that onion soup is a low source of calories compared to other vegetables.