Onion - calories, carbs, nutrition

Onion contain several important nutrients: 1 medium only contains 40 calories, on average. However, more than 88% of onion is composed of carbs 9 grams. It also contains 0.1 grams of fat, 1 grams of protein and 7 grams of sugar.

Onion - calories, carbs, nutrition
Onion nutrition facts

40
Cals

9 g (88%)
Net Carbs

1 g (10%)
Protein

0.1 g (2%)
Fats

7 g
Sugars

Onion Nutritional Facts

Serving Size: 1 medium

  • Carbs - 9 g
  • Dietary Fiber - 2 g
  • Sugars - 7 g
  • Fat - 0.1 g
  • Saturated - 0 g
  • Polyunsaturated - 0 g
  • Monounsaturated - 0 g
  • Trans - 0 g
  • Protein - 1 g
  • Sodium - 4 mg
  • Potassium - 170 mg
  • Cholesterol - 0 mg
  • Vitamin A - 0 %
  • Vitamin C - 28 %
  • Calcium - 2 %
  • Iron - 1 %

Percentages are based on a diet of 2000 calories a day.

How many calories are in onion?

How many calories are in onion - calories, carbs, nutrition

Onion contain around 40 calories, but this can vary by the serving size and how you consume it. Below are the calorie contents of different serving sizes of onion:

  • 1 medium: 40 grams

If you are unsure about the size of your onion, you can estimate that an average onion contains about 40 calories. About 88% of onion calories come from carbs, 10% from protein, and 2% from fat.

How many carbs are in onion?

How many carbs are in onion - calories, carbs, nutrition

Here is the carb content of standard serving sizes onion:

  • 1 medium: 9 grams

Onion also contains 2 grams of fiber, depending on its size. You can subtract 2 grams if you are looking for the net carb content 7 (net carbs = total carbs - fiber).

How does Onion fit into your Daily Goals?

How does Onion fit into your Daily Goals - calories, carbs, nutrition

This table contains Fitness Goals for Heart Healthy:

UsedLeft
Calorie Goal40/2000 Cal1960 Cal
Fat0.1/67 g66,9 g
Sodium4/2300 mg2296 mg
Cholesterol0/300 mg300 mg

This table contains Fitness Goals for Low Carb:

UsedLeft
Calorie Goal40/2000 Cal1960 Cal
Carbohydrates9/250 g241 g
Sugar7/75 g68 g
Fiber2/25 g23 g

This table contais Fitness Goals for Macronutrients Focused:

UsedLeft
Calorie Goal40/2000 Cal1960 Cal
Fat0.1/67 g66,9 g
Carbohydrates9/250 g241 g
Protein1/75 g74 g

How long would it take to burn off 40 calories?

How long would it take to burn off 40 calories - calories, carbs, nutrition

Values estimated based on person weighing 140 lbs.

  • Cycling - 6 minutes
  • Running - 4 minutes
  • Cleaning - 14 minutes
  • Swimming - 85 minutes
  • Bodyflex - 19 minutes
  • Skipping - 44 minutes
  • Basketball - 51 minutes
  • Curling - 52 minutes
  • Fencing - 52 minutes
  • Climbing - 34 minutes
  • Croquet - 42 minutes
  • Sleep - 51 minutes

How many protein are in onion?

How many protein are in onion - calories, carbs, nutrition

Onion is a good source of quality protein, with just 1 medium containing 1 grams.

Look at the list of protein content in different servings of onion:

  • 1 medium: 1 grams

Protein is necessary for many vital functions in your body, including growth and development, cellular repair and immune system regulation.

How many sugar are in onion?

How many sugar are in onion - calories, carbs, nutrition

However, despite having all the nutritious qualities of onion, 1 medium of onion comes with almost 7 extra grams of added sugar.

Compare the sugar content of different servings of onion:

  • 1 medium: 7 grams

If you are liberal with your servings, this makes it easy to consume a lot of sugar without meaning to. To make sure you are not getting too much, check the labels and choose serving with the least amount of added sugar. Also, remember to watch your portion size.

How much fat is in onion?

How much fat is in onion - calories, carbs, nutrition

Onion contain on average 0.1 grams of total fat per serve (1 medium) – the majority - 0,1 grams - of that fat is also classified as unsaturated, with only 0 grams being saturated fat.

Here is an example of the fat content in popular servings of onion:

  • 1 medium: 0.1 grams