Vegetables • Deep Nutrition Analytics
Onions, raw
Delivering 40 kcal per 100 grams, Onions, raw functions as a vegetables with carbohydrates (9.3g) driving its core energy contribution. Its nutritional footprint is centered on clean macronutrient energy rather than concentrated micronutrient density. Offering gentle energy density (0.4 kcal/g) and 7.6g of net carbohydrates, it integrates easily into calorie-restricted diets.
- Protein
- 1.1 g
- Carbohydrates
- 9.3 g
- Fat
- 0.1 g
- Fiber
- 1.7 g
Produce Profile: Hydration & Micronutrients
Onions, raw provides natural botanical nutrition with 40 calories per 100g. Providing 1.7g of dietary fiber, it serves as a whole-food source of vital micronutrients.
Nutritional Highlights & Outliers
Calorie-Conscious Profile
With an energy density of 0.4 kcal/g (40 kcal/100g), this food supports high-volume, calorie-controlled nutrition.
Complete Nutrition Profile (per 100 g)
Macronutrients
| Nutrient | Amount per 100 g |
|---|---|
| Total Sugars | 4.2 g |
| Total lipid (fat) | 0.1 g |
| Carbohydrate, by difference | 9.3 g |
| Energy | 40 kcal |
| Protein | 1.1 g |
| Energy | 166 kJ |
| Fiber, total dietary | 1.7 g |
Micronutrients
| Nutrient | Amount per 100 g |
|---|---|
| Vitamin C | 7.4 mg |
| Vitamin B6 | 0.1 mg |
| Manganese | 0.1 mg |
| Copper | 0 mg |
| Potassium | 146 mg |
Vitamins
| Nutrient | Amount per 100 g |
|---|---|
| Vitamin B-6 | 0.1 mg |
| Vitamin E (alpha-tocopherol) | 0 mg |
| Vitamin C, total ascorbic acid | 7.4 mg |
| Vitamin K (phylloquinone) | 0.4 µg |
| Vitamin A, IU | 2 IU |
Minerals
| Nutrient | Amount per 100 g |
|---|---|
| Calcium, Ca | 23 mg |
| Potassium, K | 146 mg |
| Zinc, Zn | 0.2 mg |
| Selenium, Se | 0.5 µg |
| Iron, Fe | 0.2 mg |
| Magnesium, Mg | 10 mg |
| Phosphorus, P | 29 mg |
| Sodium, Na | 4 mg |
| Copper, Cu | 0 mg |
| Manganese, Mn | 0.1 mg |
Other nutrients
| Nutrient | Amount per 100 g |
|---|---|
| Betaine | 0.1 mg |
| Isoleucine | 0 g |
| Leucine | 0 g |
| Lysine | 0 g |
| Cystine | 0 g |
| Valine | 0 g |
| Arginine | 0.1 g |
| Histidine | 0 g |
| Aspartic acid | 0.1 g |
| Serine | 0 g |
| SFA 16:0 | 0 g |
| SFA 18:0 | 0 g |
| MUFA 18:1 | 0 g |
| PUFA 18:2 | 0 g |
| PUFA 18:3 | 0 g |
| Fatty acids, total monounsaturated | 0 g |
| Fatty acids, total polyunsaturated | 0 g |
| Lutein + zeaxanthin | 4 µg |
| Tocotrienol, alpha | 0 mg |
| Niacin | 0.1 mg |
| Pantothenic acid | 0.1 mg |
| Choline, total | 6.1 mg |
| Fluoride, F | 1.1 µg |
| Sucrose | 1 g |
| Glucose | 2 g |
| Water | 89.1 g |
| Thiamin | 0 mg |
| Riboflavin | 0 mg |
| Folate, total | 19 µg |
| Folate, food | 19 µg |
| Tryptophan | 0 g |
| Threonine | 0 g |
| Methionine | 0 g |
| Phenylalanine | 0 g |
| Tyrosine | 0 g |
| Alanine | 0 g |
| Glutamic acid | 0.3 g |
| Glycine | 0 g |
| Proline | 0 g |
| Fatty acids, total saturated | 0 g |
| SFA 14:0 | 0 g |
| Phytosterols | 15 mg |
| Ash | 0.3 g |
| Fructose | 1.3 g |
| Carotene, beta | 1 µg |
| Folate, DFE | 19 µg |
Serving calculator
Common serving sizes
- cup, chopped160 g
- slice, medium (1/8" thick)14 g
- medium (2-1/2" dia)110 g
- large150 g
- rings60 g
Compare Onions, raw with Category Peers
Onions, raw vs Peppers, hot chili, green, raw
Compared to Peppers, hot chili, green, raw, Onions, raw has 97% less Vitamin C and 0% higher calories per 100g.
Onions, raw vs Carrot juice, canned
Compared to Carrot juice, canned, Onions, raw has 1% more carbohydrates and 1% higher calories per 100g.
Frequently Asked Questions
How many calories are in Onions, raw?
A standard 100-gram serving of Onions, raw contains 40 calories (167 kJ), alongside 1.1g of protein, 9.3g of carbohydrates, and 0.1g of fat.
In common serving sizes:- 160g (cup, chopped): ~64 kcal
- 14g (slice, medium (1/8" thick)): ~6 kcal
- 110g (medium (2-1/2" dia)): ~44 kcal
Is Onions, raw suitable for a keto or low-carb diet?
Yes, in moderation. Onions, raw contains 7.6g of net carbs per 100g (9.3g carbs minus 1.7g fiber). It fits comfortably into standard low-carb meal plans and can be included in ketogenic diets when portion sizes are measured carefully.
What are the main vitamins and minerals found in Onions, raw?
Onions, raw exhibits modest micronutrient density, led by Vitamin C at 7.4 mg (8% DV). It functions primarily as a macronutrient energy contributor.
Data source: USDA FoodData Central, SR Legacy (FDC ID 170000).