Onion vs Red onion: Which Has More Calories?

Per 100 g, Onion has 40 kcal and Red onion has 33 kcal, so Red onion has 18% fewer calories.

Onion has more carbohydrates (9.34 g vs 6.1 g). Relative to calories, Red onion is the better protein source (3.64 g vs 2.75 g of protein per 100 kcal).

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

Nutrition Facts

Onion
Serving size:
  change
one onion (110g)slice (15g)cup, sliced (115g)
5g 10g 15g 20g 30g 40g 50g 60g 80g 100g 120g 140g 160g 180g 200g 220g 250g 300g 350g 400g 450g 500g 600g 700g 800g 900g 1000g
1oz 2oz 3oz 4oz 5oz 6oz 7oz 8oz 10oz 12oz 15oz 20oz 25oz 30oz 35oz 40oz 50oz
Amount Per Serving:
Calories
% Daily Value
Total Fat g
0%
Saturated Fat g
0%
Cholesterol mg
0%
Sodium mg
0%
Total Carbohydrates g
0%
Dietary Fiber g
0%
Sugars g
Protein g
0%
Vitaminium C mg
0%
Calcium mg
0%
Iron mg
0%
Potassium mg
0%
Glycemic Index: 15
* The % Daily Value (DV) shows how much a nutrient in one serving of food contributes to your total daily diet. A 2000-calorie daily intake is used as a general guideline for nutrition advice.
Red Onion
Serving size:
  change
one red onion (90g)cup (160g)half cup (80g)
5g 10g 15g 20g 30g 40g 50g 60g 80g 100g 120g 140g 160g 180g 200g 220g 250g 300g 350g 400g 450g 500g 600g 700g 800g 900g 1000g
1oz 2oz 3oz 4oz 5oz 6oz 7oz 8oz 10oz 12oz 15oz 20oz 25oz 30oz 35oz 40oz 50oz
Amount Per Serving:
Calories
% Daily Value
Total Fat g
0%
Saturated Fat g
0%
Cholesterol mg
0%
Sodium mg
0%
Total Carbohydrates g
0%
Dietary Fiber g
0%
Sugars g
Protein g
0%
Vitaminium C mg
0%
Calcium mg
0%
Iron mg
0%
Potassium mg
0%
Glycemic Index: 
* The % Daily Value (DV) shows how much a nutrient in one serving of food contributes to your total daily diet. A 2000-calorie daily intake is used as a general guideline for nutrition advice.

Onion vs Red Onion 100g Compare

per 100g Onion Red onion
Calories 40 33
Carbohydrates 9.34 g 6.1 g
Fat 0.1 g 0.4 g
Dietary fiber 1.7 g 1.7 g
Protein 1.1 g 1.2 g
Water 89.11 g 90.8 g
Calcium 23 mg 25 mg
Iron 0.21 mg 0.5 mg
Magnessium 10 mg 8 mg
Potassium 146 mg 121 mg
Sodium 4 mg 6 mg
Vitaminium A 2 IU 2 IU
Vitaminium B1 (Thiamine) 0.046 mg 0.03 mg
Vitaminium B2 (riboflavin) 0.027 mg 0.03 mg
Vitaminium B3 (Niacin) 0.116 mg 0.2 mg
Vitaminium B6 0.12 mg 0.1 mg
Vitaminium C 7.4 mg 6 mg
Vitaminium E 0.02 mg 0.12 mg
Beta karoten 1 µg 12 µg

More Calories in Onion

At first glance, you can see that in onion is more calories than in red onion.

Onion has 40 kcal per 100g and red onion 33 kcal per 100g so it is pretty easy to calculate that the difference is about 21%.

In onion and in red onion most calories came from carbs.

See tables below to compare onion with red onion in details.

Onion 100g

40kcal

Calories source

  • 88% CARBS.
  • 10% PROTEIN
  • 2% FAT
Onion calories per:
100g | ounce | single piece | slice | cup | sliced

Red onion 100g

33kcal

Calories source

  • 74% CARBS
  • 15% PROTEIN
  • 11% FAT
Red onion calories per:
100g | ounce | single piece | cup | half cup

Compares of onion

Compares of red onion

Related foods:

Related compares:

About the data

Nutrition values on this page are given per 100 g of the food and are based on the official United States Department of Agriculture FoodData Central database. The exact record used for each food is linked under the tables.

Marcin Piotrowicz – calories-info.com creator · Healthy diet and healthy lifestyle promoter. The information is for general purposes and is not medical or dietary advice.