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Onions (raw) — Nutrition Facts
USDA FoodData Central · Low protein density2.8 g protein per 100 kcal
Protein 10% · 1.1 g
Carbs 88% · 9.3 g
Fat 2% · 0.1 g
Diet compliance
| Diet | Why |
|---|
| ✗ Keto | 7.6 g net carbs / 100 g — keto-friendly means <6 g |
| ✗ Carnivore | not animal flesh |
| ✓ Vegan | no animal products |
| ✓ Vegetarian | no meat or fish (dairy/eggs OK) |
| ✓ Whole30 | no grains, dairy, legumes, or added sugar |
Nutrition label — per 100 g
Nutrition Facts
Onions (raw) · per 100 g
Calories40
Total Fat 0.1 g0% DV
Saturated Fat 0 g0% DV
Cholesterol 0 mg0% DV
Sodium 4 mg0% DV
Total Carbs 9.3 g3% DV
Fiber 1.7 g6% DV
Sugars 4.2 g
Protein 1.1 g2% DV
Vitamin D 0 µg · Calcium 23 mg · Iron 0.2 mg · Potassium 146 mg
Based on FDA Daily Values · USDA FoodData Central
Calories & protein per common portion
| Portion | Weight | Calories |
|---|
| 100 grams | 100 g | 40 |
| 1 cup, chopped | 160 g | 64 |
| 1 cup, sliced | 115 g | 46 |
| 1 tbsp chopped | 10 g | 4 |
| 1 large | 150 g | 60 |
| 1 slice, large (1/4" thick) | 38 g | 15.2 |
| 1 medium (2-1/2" dia) | 110 g | 44 |
| 1 slice, medium (1/8" thick) | 14 g | 5.6 |
| 1 small | 70 g | 28 |
Protein per calorie
Onions (raw) delivers 2.8 g of protein per 100 calories — see where it ranks →
Saves to this browser — see My Dex
FAQ
How many calories are in Onions (raw)?
Onions (raw) has 40 calories per 100 grams, which is about 64 calories per 1 cup, chopped.
How much protein is in Onions (raw)?
Onions (raw) has 1.1 g of protein per 100 grams — 2.8 g of protein per 100 calories.
Is Onions (raw) keto-friendly?
Onions (raw) has 7.6 g net carbs per 100 g, so it is not keto-friendly under the 6 g net-carbs-per-100 g rule of thumb.
Is Onions (raw) vegan?
Onions (raw) is vegan — it contains no animal-derived ingredients.
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