Onion vs Corn: All Nutritional Differences

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

Onion - calories, kcal, weight, nutrition
Corn - calories, kcal, weight, nutrition

Fact 1: There is Less Calories in Onion

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

Onion has 40 kcal per 100g and corn 86 kcal per 100g so it is pretty easy to calculate that the difference is about 115%.

In onion and in corn most calories came from carbs.

See tables below to compare onion with corn in details.

Fact 2: Onion And Corn Nutrition Difference

Corn vs Onion: Vitamins and Minerals Comparison

per 100gOnionCorn
Calories40 86
Carbohydrates9.34 g18.7 g
Fat0.1 g1.35 g
Dietary fiber1.7 g2 g
Protein1.1 g3.27 g
Calcium23 mg2 mg
Magnessium10 mg37 mg
Potassium146 mg270 mg
Sodium4 mg15 mg
Zink0.17 mg0.46 mg
Vitaminium B1 (Thiamine)0.046 mg0.155 mg
Vitaminium B2 (riboflavin)0.027 mg0.055 mg
Vitaminium B3 (Niacin)0.116 mg1.77 mg
Vitaminium B50.123 mg0.717 mg
Vitaminium B60.12 mg0.093 mg
Vitaminium B9 (Folic acid)19 mg42 mg
Vitaminium C7.4 mg6.8 mg
Vitaminium E0.02 mg0.07 mg
Beta karoten1 mg16 mg

Less protein in onion

It is aslo easy to see see that in onion is less protein than in corn.

There is 3.27g per 100g of corn and 1.1g per 100g of onion so using simple math we can see that difference is about 197%.

Less carbohydrates in onion

In onion is less carbohydrates than in corn.

There is 18.7g/100g of carbohydrates in corn and 9.34g/100g in onion so let me do the math for you again - difference is about 100%.

Less fat in onion

In onion is less fats than in corn.

The tables above show us that there is 1.35g/100g of fats in corn and 0.1g/100g in onion. In this case difference is about 1250%.


  • 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


  • Calories86
  • Carbohydrates18.7 g
  • Fat1.35 g
  • Dietary fiber2 g
  • Protein3.27 g
Corn calories per:
100g | ounce | single piece | tablespoon | teaspoon | cup | half cup | small can | medium can

Calories source

  • 75% CARBS
  • 13% PROTEIN
  • 12% FAT

Vitamins: corn vs onion

Minerals: onion vs corn

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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