Asparagus vs Onion: All Nutritional Differences

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

Asparagus - calories, kcal, weight, nutrition
Onion - calories, kcal, weight, nutrition

Less Calories in Asparagus

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

Asparagus has 20 kcal per 100g and onion 40 kcal per 100g so it is pretty easy to calculate that the difference is about 100%.

In asparagus and in onion most calories came from carbs.

See tables below to compare asparagus with onion in details.

Asparagus And Onion Nutrition Difference

Onion vs Asparagus: Vitamins and Minerals Comparison

per 100gAsparagusOnion
Calories20 40
Carbohydrates3.38 g9.34 g
Fat0.12 g0.1 g
Dietary fiber2.1 g1.7 g
Protein2.2 g1.1 g
Calcium24 mg23 mg
Magnessium14 mg10 mg
Phosphorus52 mg29 mg
Potassium202 mg146 mg
Sodium2 mg4 mg
Zink0.54 mg0.17 mg
Vitaminium B1 (Thiamine)0.143 mg0.046 mg
Vitaminium B2 (riboflavin)0.141 mg0.027 mg
Vitaminium B3 (Niacin)0.978 mg0.116 mg
Vitaminium B50.274 mg0.123 mg
Vitaminium B60.091 mg0.12 mg
Vitaminium B9 (Folic acid)52 mg19 mg
Vitaminium C5.6 mg7.4 mg
Vitaminium E1.13 mg0.02 mg
Beta karoten9 mg1 mg

More protein in asparagus

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

There is 1.1g per 100g of onion and 2.2g per 100g of asparagus so using simple math we can see that difference is about 100%.

Less carbohydrates in asparagus

In asparagus is less carbohydrates than in onion.

There is 9.34g/100g of carbohydrates in onion and 3.38g/100g in asparagus so let me do the math for you again - difference is about 176%.

More fat in asparagus

In asparagus is more fats than in onion.

The tables above show us that there is 0.1g/100g of fats in onion and 0.12g/100g in asparagus. In this case difference is about 20%.


  • Calories20
  • Carbohydrates3.38 g
  • Fat0.12 g
  • Dietary fiber2.1 g
  • Protein2.2 g
Asparagus calories per:
100g | ounce | single piece | handfull | bunch | cup | half cup

Calories source

  • 58% CARBS.
  • 38% PROTEIN
  • 5% 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 asparagus

Minerals: asparagus 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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