Calories in Red onion
Red onion has 44 kcal per 100 g, with 0.9 g protein, 9.9 g carbohydrate and 0.1 g fat. 1 red onion (197 g) is 87 kcal.
Nutrition per serving
| Serving | kcal | Protein | Carbs | Fat | Fiber | Sugars | Sodium |
|---|---|---|---|---|---|---|---|
| 100 g | 44 | 0.9 g | 9.9 g | 0.1 g | 2.2 g | 5.8 g | 1 mg |
| 1 Onion Edible · 197 g | 87 | 1.8 g | 20 g | 0.2 g | 4.3 g | 11 g | 2 mg |
Where the calories come from
8% protein · 90% carbohydrate · 2% fat, by energy (4, 4 and 9 kcal per gram).
- Protein 8%
- Carbs 90%
- Fat 2%
1 red onion on the day view
What logging 1 red onion looks like in Kaunto: 87 kcal is 4% of a 2,000 kcal day, and 17 servings reach 30 g of protein.
The reference day is a scale, not a target; the macro calculator estimates your own.
Compared with other vegetables
Per 100 g. Closest by protein per calorie.
| Food | kcal | Protein | Carbs | Fat |
|---|---|---|---|---|
| Red onion | 44 | 0.9 g | 9.9 g | 0.1 g |
| Carrot | 41 | 0.9 g | 9.6 g | 0.2 g |
| Mature carrots | 48 | 0.9 g | 10 g | 0.4 g |
| Sweet potato, baked | 90 | 2 g | 21 g | 0.2 g |
| Baked potato, with skin | 93 | 2.5 g | 21 g | 0.1 g |
| Grape tomatoes | 27 | 0.8 g | 5.5 g | 0.6 g |
Frequently asked questions
How many calories are in 1 red onion?
1 red onion (197 g) contains 87 kcal, 1.8 g protein, 20 g carbohydrate and 0.2 g fat.
How much protein is in red onion?
Red onion has 0.9 g of protein per 100 g, which is 1.8 g in 1 red onion.
What are the macros of red onion?
Per 100 g: 0.9 g protein, 9.9 g carbohydrate, 0.1 g fat. By energy that is 8% protein, 90% carbohydrate and 2% fat, so most of its calories come from carbohydrate.
Source: USDA FoodData Central, “Onions, red, raw”, FDC ID 790577 (Foundation Foods), as indexed by Kaunto. Per-serving figures are scaled from the 100 g values and rounded. Counting macros for the first time? Start with how to count macros.