Broccoli vs Onion: All Nutritional Differences

Where is more calories, protein, carbs - what is more healthy?

Broccoli - calories, kcal, weight, nutrition
Onion - calories, kcal, weight, nutrition

Fact 1: There is Less Calories in Broccoli

At first glance, you can see that in broccoli is less calories than in onion.

Broccoli has 34 kcal per 100g and onion 40 kcal per 100g so it is pretty easy to calculate that the difference is about 18%.

In broccoli and in onion most calories came from carbs.

See tables below to compare broccoli with onion in details.

Fact 2: Broccoli And Onion Nutrition Difference

Onion vs Broccoli: Vitamins and Minerals Comparison

per 100gBroccoliOnion
Calories34 40
Carbohydrates6.64 g9.34 g
Fat0.37 g0.1 g
Dietary fiber2.6 g1.7 g
Protein2.82 g1.1 g
Calcium47 mg23 mg
Magnessium21 mg10 mg
Potassium316 mg146 mg
Sodium33 mg4 mg
Zink0.41 mg0.17 mg
Vitaminium B1 (Thiamine)0.071 mg0.046 mg
Vitaminium B2 (riboflavin)0.117 mg0.027 mg
Vitaminium B3 (Niacin)0.639 mg0.116 mg
Vitaminium B50.573 mg0.123 mg
Vitaminium B60.175 mg0.12 mg
Vitaminium B9 (Folic acid)63 mg19 mg
Vitaminium C89.2 mg7.4 mg
Vitaminium E0.17 mg0.02 mg
Beta karoten361 mg1 mg

More protein in broccoli

It is aslo easy to see see that in broccoli is more protein than in onion.

There is 1.1g per 100g of onion and 2.82g per 100g of broccoli so using simple math we can see that difference is about 156%.

Less carbohydrates in broccoli

In broccoli is less carbohydrates than in onion.

There is 9.34g/100g of carbohydrates in onion and 6.64g/100g in broccoli so let me do the math for you again - difference is about 41%.

More fat in broccoli

In broccoli is more fats than in onion.

The tables above show us that there is 0.1g/100g of fats in onion and 0.37g/100g in broccoli. In this case difference is about 270%.


  • Calories34
  • Carbohydrates6.64 g
  • Fat0.37 g
  • Dietary fiber2.6 g
  • Protein2.82 g
Broccoli calories per:
100g | ounce | single piece | cup | flowerets | cup | half cup | 1 floweret

Calories source

  • 65% CARBS.
  • 27% PROTEIN
  • 8% FAT


  • Calories40
  • Carbohydrates9.34 g
  • Fat0.1 g
  • Dietary fiber1.7 g
  • Protein1.1 g
Onion calories per:
100g | ounce | single piece | slice | cup | sliced

Calories source

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

Vitamins: onion vs broccoli

Minerals: broccoli vs onion

Marcin Piotrowicz
Author of this page
Marcin Piotrowicz 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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