Onion: Calories and Nutrition Analyse



How many calories in onion?

100g of onions have about 40 calories (kcal).
Calories per: ounce | one onion | slice | cup, sliced

For instance, medium size onion (110 g) has about 44 calories.

It is about 2% of daily calories intake for adult person with medium weight and medium activity (for calculation we assumed 2400 kcal daily intake).

Onion - calories, kcal

Scroll down for details and nutrition tables.

To visualize how much 44 kcal actually is, take in mind that calories amount from onion is similar to calories amount from ie.:

  • 0.5 apple
  • 0.5 glass of Coca Cola (220 ml glass)
  • 2 cubes of sugar

Take a look at tables below to see details about onion nutrition.

Calories in Onion Based On Vegetables Category

See all nutrition data of onion on charts.

Calories40kcal/100g(11 kcal/oz)
Protein1.1g/100g(0.3 g/oz)
Carbs Total9.3g/100g(2.6 g/oz)
Fat0.1g/100g(0 g/oz)

Calories And Nutrition in Medium Size Onion (110 G), 100g and Ounce

per 100 gper ouncemedium size onion (110 g)
Calories40 11.34 44
Carbs Total9.34 g2.65 g10.3 g
Dietary fiber1.7 g0.48 g1.9 g
Fat0.1 g< 0.1 g0.1 g
Protein1.1 g0.31 g1.2 g

onion - vitamins per 100g

  • Vit A2 IU
  • Vit B1 (Thiamine)0.046 mg
  • Vit B2 (riboflavin)0.027 mg
  • Vit B3 (Niacin)0.116 mg
  • Vit B50.123 mg
  • Vit B60.12 mg
  • Vit B9 (Folic acid)19 mcg
  • Vit C7.4 mg
  • Vit E0.02 mg

Energy content of onion

  • 88% CARBS
  • 10% PROTEIN
  • 2% FAT

onion - minerals per 100g

  • Potassium146 mg
  • Phosphorus29 mg
  • Magnessium10 mg
  • Calcium23 mg
  • Sodium4 mg
  • Zink0.17 mg
  • Beta karoten1 mg

How many calories in 1, 2, 3 or 5 onions?

As I wrote before medium size onion (110 g) have 44 calories. It is easy to count that two onions have about 88 calories and three onions have about 132 calories. In table below you can also see calories amount for four and five onions.

  • Medium size onion (110 g)44 kcal
  • Slice of onion (15g)6 kcal
  • Onion cup, sliced (115g)46 kcal
  • Ounce (oz) of onions11 kcal
  • Half of medium size onion22 kcal
  • Small size onion (88g)35.2 kcal
  • Big size onion (143g)57.2 kcal
  • Two medium size onions88 kcal
  • Three medium size onions132 kcal
  • Four medium size onions176 kcal
  • Five medium size onions220 kcal

Protein in onion

Onions have 1.1 g protein per 100g.
When you multiplay this value with weight of medium size onion (110 g) you can see that you will get about 1.2 g of protein.

Carbs in onions

Onions have 9.34 g carbohydrates per 100g.
In the same way as for protein we can calculate that medium size onion (110 g) has about 10.3 g of carbs.

Fat in onions

Onions have 0.1 g fat per 100g.
So it is easy to count that medium size onion (110 g) has about 0.1 g of fat.

Onion - caloies, wieght

medium size onion (110 g) has:

44kcalFor burning these calories you have to:
Bike6 min.Bike
Horse ride8 min.Horse ride
Play tennis4 min.Tennis
Run4 min.Run
Swim5 min.Swim

Interesting charts - compare onion with other vegetables

When you look at charts below you will see how onion looks like in comparsion to other products from its category. When you click on selected product you will se detailed comparsion.

Vitamin C in Onion Based On Vegetables Category
Fiber in Onion Based On Vegetables Category
Fat in Onion Based On Vegetables Category
Magnesium in Onion Based On Vegetables Category
Phosphorus in Onion Based On Vegetables Category
Potassium in Onion Based On Vegetables Category
Protein in Onion Based On Vegetables Category
Sodium in Onion Based On Vegetables Category
Vitamin B1 in Onion Based On Vegetables Category
Vitamin B2 in Onion Based On Vegetables Category
Vitamin B3 (Niacin) in Onion Based On Vegetables Category
Vitamin B5 (Acid Pantotenic) in Onion Based On Vegetables Category
Vitamin B6 in Onion Based On Vegetables Category
Vitamin B9 (Folic Acid) in Onion Based On Vegetables Category
Vitamin E in Onion Based On Vegetables Category
Zinc in Onion Based On Vegetables Category
Carbohydrates in Onion Based On Vegetables Category
Calories in Onion Based On Vegetables Category
Calcium in Onion Based On Vegetables Category
Vitamin A in Onion Based On Vegetables Category
Marcin Piotrowicz
Author of this page
Marcin Piotrowicz

calories-info.com creator
Healthy diet and healthy lifestyle promoter

All information about nutrition on this website was created with help of information from the official United States Department of Agriculture database.

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