Beetroot vs Onion: Which Has More Calories?
Per 100 g, Beetroot has 43 kcal and Onion has 40 kcal, so Onion has 7% fewer calories.
Beetroot has more fiber (2.8 g vs 1.7 g). Relative to calories, Beetroot is the better protein source (3.74 g vs 2.75 g of protein per 100 kcal).


Nutrition Facts
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Amount Per Serving:
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Amount Per Serving:
Beetroot vs Onion 100g Compare
| per 100g | Beetroot | Onion |
|---|---|---|
| Calories | 43 | 40 |
| Carbohydrates | 9.56 g | 9.34 g |
| Fat | 0.17 g | 0.1 g |
| Dietary fiber | 2.8 g | 1.7 g |
| Protein | 1.61 g | 1.1 g |
| Calcium | 16 mg | 23 mg |
| Iron | 0.8 mg | 0.21 mg |
| Magnessium | 23 mg | 10 mg |
| Potassium | 325 mg | 146 mg |
| Sodium | 78 mg | 4 mg |
| Vitaminium A | 33 IU | 2 IU |
| Vitaminium B1 (Thiamine) | 0.031 mg | 0.046 mg |
| Vitaminium B2 (riboflavin) | 0.057 mg | 0.027 mg |
| Vitaminium B3 (Niacin) | 0.334 mg | 0.116 mg |
| Vitaminium B5 | 0.155 mg | 0.123 mg |
| Vitaminium B6 | 0.067 mg | 0.12 mg |
| Vitaminium B9 (Folic acid) | 109 µg | 0.019 µg |
| Vitaminium C | 4.9 mg | 7.4 mg |
| Vitaminium E | 0.04 mg | 0.02 mg |
| Beta karoten | 20 µg | 1 µg |
More Calories in Beetroot
At first glance, you can see that in beetroot is just a little more calories than in onion.
Beetroot has 43 kcal per 100g and onion 40 kcal per 100g so it is pretty easy to calculate that the difference is about 8%.
In beetroot and in onion most calories came from carbs.
See tables below to compare beetroot with onion in details.
Beetroot 100g
43kcalCalories source
- 83% CARBS.
- 14% PROTEIN
- 3% FAT
Onion 100g
40kcalCalories source
- 88% CARBS
- 10% PROTEIN
- 2% FAT
Compares of beetroot
Compares of onion
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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.