Onion vs Sweet potato: Which Has More Calories?

Per 100 g, Onion has 40 kcal and Sweet potato has 86 kcal, so Onion has 53% fewer calories.

Sweet potato has more fiber (3 g vs 1.7 g). Sweet potato has more carbohydrates (20.1 g vs 9.34 g). Relative to calories, Onion is the better protein source (2.75 g vs 1.83 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.
Sweet Potato
Serving size:
  change
one sweet potato (230g)cup, cubes (150g)cup, mashed (210g)
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 Sweet Potato 100g Compare

per 100g Onion Sweet potato
Calories 40 86
Carbohydrates 9.34 g 20.12 g
Fat 0.1 g 0.05 g
Dietary fiber 1.7 g 3 g
Protein 1.1 g 1.57 g
Water 89.11 g 77.28 g
Calcium 23 mg 30 mg
Iron 0.21 mg 0.61 mg
Magnessium 10 mg 25 mg
Potassium 146 mg 337 mg
Sodium 4 mg 55 mg
Vitaminium A 2 IU 14187 IU
Vitaminium B1 (Thiamine) 0.046 mg 0.078 mg
Vitaminium B2 (riboflavin) 0.027 mg 0.061 mg
Vitaminium B3 (Niacin) 0.116 mg 0.557 mg
Vitaminium B5 0.123 mg 0.8 mg
Vitaminium B6 0.12 mg 0.209 mg
Vitaminium B9 (Folic acid) 0.019 µg 0.011 µg
Vitaminium C 7.4 mg 2.4 mg
Vitaminium E 0.02 mg 0.26 mg
Beta karoten 1 µg 8509 µg

Less Calories in Onion

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

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

In onion and in sweet potato most calories came from carbs.

See tables below to compare onion with sweet potato in details.

Onion 100g

40kcal

Calories source

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

Sweet potato 100g

86kcal

Calories source

  • 92% CARBS
  • 7% PROTEIN
  • 1% FAT
Sweet potato calories per:
100g | ounce | single piece | cup | cubes | cup | mashed

Compares of onion

Compares of sweet potato

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.