Onion, raw vs Red bell pepper, raw
Both compared per 100 g. Onion, raw has 54% more calories than red bell pepper, raw (40 kcal vs 26 kcal). They have similar amounts of protein. Red bell pepper, raw has 24% more fiber than onion, raw (2.1 g vs 1.7 g). They have similar amounts of sugars.
The biggest vitamin and mineral differences: Red bell pepper, raw has more Vitamin C (+134% DV), Red bell pepper, raw has more Vitamin A (+17% DV) and Red bell pepper, raw has more Vitamin E (+10% DV).
| Per 100 g | Onion, raw | Red bell pepper, raw |
|---|---|---|
| Calories | 40 kcal | 26 kcal |
| Protein | 1.1 g | 0.99 g |
| Carbohydrates | 9.3 g | 6 g |
| Fiber | 1.7 g | 2.1 g |
| Sugars | 4.2 g | 4.2 g |
| Total fat | 0.1 g | 0.3 g |
| Saturated fat | 0.042 g | 0.059 g |
| Cholesterol | 0 mg | 0 mg |
| Sodium | 4 mg | 4 mg |
| Water | 89.1 g | 92.2 g |
| Sodium | 4 mg (0.2%) | 4 mg (0.2%) |
| Vitamin A | 0 µg (0%) | 157 µg (17%) |
| Vitamin C | 7.4 mg (8%) | 128 mg (142%) |
| Vitamin D | 0 µg (0%) | 0 µg (0%) |
| Vitamin E | 0.02 mg (0.1%) | 1.6 mg (11%) |
| Vitamin K | 0.4 µg (0.3%) | 4.9 µg (4%) |
| Thiamin (B1) | 0.046 mg (4%) | 0.054 mg (5%) |
| Riboflavin (B2) | 0.027 mg (2%) | 0.085 mg (7%) |
| Niacin (B3) | 0.12 mg (0.7%) | 0.98 mg (6%) |
| Pantothenic acid (B5) | 0.12 mg (2%) | 0.32 mg (6%) |
| Vitamin B6 | 0.12 mg (7%) | 0.29 mg (17%) |
| Folate (B9) | 19 µg (5%) | 46 µg (12%) |
| Vitamin B12 | 0 µg (0%) | 0 µg (0%) |
| Choline | 6.1 mg (1%) | 5.6 mg (1%) |
| Calcium | 23 mg (2%) | 7 mg (0.5%) |
| Iron | 0.21 mg (1%) | 0.43 mg (2%) |
| Magnesium | 10 mg (2%) | 12 mg (3%) |
| Phosphorus | 29 mg (2%) | 26 mg (2%) |
| Potassium | 146 mg (3%) | 211 mg (4%) |
| Zinc | 0.17 mg (2%) | 0.25 mg (2%) |
| Copper | 0.039 mg (4%) | 0.017 mg (2%) |
| Manganese | 0.13 mg (6%) | 0.11 mg (5%) |
| Selenium | 0.5 µg (0.9%) | 0.1 µg (0.2%) |
| Fluoride | 1.1 µg | not reported |
Bold: the higher value. Percentages are % Daily Value. Sources: USDA FoodData Central: SR Legacy; USDA FoodData Central: SR Legacy. "Not reported" means the source has no value, which is not the same as zero.
Onion, raw
Onion, raw contains 40 kcal per 100 g. A typical serving of 1 slice, medium, 1/8" thick (14 g) provides about 6 kcal.
Roughly 88% of its calories come from carbohydrates, with 10% from protein and 2% from fat (estimated with general energy factors).
Red bell pepper, raw
Red bell pepper, raw contains 26 kcal per 100 g. A typical serving of 1 medium, approx 2-3/4" long, 2-1/2 dia. (119 g) provides about 31 kcal.
Roughly 78% of its calories come from carbohydrates, with 13% from protein and 9% from fat (estimated with general energy factors).