Know what’s on your plate
Onion
Calories & nutrition facts
cooked, boiled, drained, with salt
Nutrition facts
Per 100 g% DV- Calories 42 kcal —
- Protein 1.4 g 3%
- Carbohydrate 8.2 g 3%
- Fat 0.2 g 0%
- Saturated fat 0 g 0%
- Fibre 1.4 g 5%
- Sugars 4.7 g —
- Sodium 239 mg 10%
- Cholesterol 0 mg 0%
Vitamins & minerals
Per 100 g% DVVitamins
- Vitamin A 0 µg 0%
- Vitamin C 5.2 mg 6%
- Vitamin D 0 µg 0%
- Vitamin E 0.02 mg 0%
- Vitamin K 0.5 µg 0%
- Thiamin (B1) 0.04 mg 4%
- Riboflavin (B2) 0.02 mg 2%
- Niacin (B3) 0.17 mg 1%
- Pantothenic acid (B5) 0.11 mg 2%
- Vitamin B6 0.13 mg 8%
- Folate (B9) 15 µg 4%
- Vitamin B12 0 µg 0%
- Choline 6.8 mg 1%
Minerals
- Calcium 22 mg 2%
- Iron 0.24 mg 1%
- Magnesium 11 mg 3%
- Phosphorus 35 mg 3%
- Potassium 166 mg 4%
- Zinc 0.21 mg 2%
- Copper 0.07 mg 7%
- Manganese 0.15 mg 7%
- Selenium 0.6 µg 1%
Calories by portion
| Portion | Weight | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|---|
| 100 g | 100 g | 42 | 1.4 g | 8.2 g | 0.2 g |
| 1 × cup | 210 g | 88 | 2.9 g | 17 g | 0.4 g |
| 1 × tbsp chopped | 15 g | 6 | 0.2 g | 1.2 g | 0 g |
| 1 × large | 128 g | 54 | 1.7 g | 10 g | 0.2 g |
| 1 × slice large (1/4" thick) | 32 g | 13 | 0.4 g | 2.6 g | 0.1 g |
| 1 × medium | 94 g | 39 | 1.3 g | 7.7 g | 0.2 g |
| 1 × slice medium (1/8" thick) | 12 g | 5 | 0.2 g | 1 g | 0 g |
| 1 × small | 60 g | 25 | 0.8 g | 4.9 g | 0.1 g |
| 1 × slice thin | 8 g | 3 | 0.1 g | 0.7 g | 0 g |
| 2 × cup | 420 g | 176 | 5.7 g | 34 g | 0.8 g |
| ½ × cup | 105 g | 44 | 1.4 g | 8.6 g | 0.2 g |
| 3 × cup | 630 g | 265 | 8.6 g | 51 g | 1.2 g |
Similar foods
- Yellow onionyellow, sauteed123 kcal / 100 g
- Sweet onionsweet, raw32 kcal / 100 g
- Pickled onionpickled, drained24 kcal / 100 g
- White onioncooked, without oil, with salt41 kcal / 100 g
- Mature onionpeeled, boiled, microwaved or steamed, drained33 kcal / 100 g
- Cebolla26 kcal / 100 g
- Carrotscooked, boiled, drained, with salt35 kcal / 100 g
- Garlicboiled, drained, without oil, without salt144 kcal / 100 g
- Broccolicooked, boiled, drained, with salt35 kcal / 100 g
- Celerycooked, boiled, drained, with salt18 kcal / 100 g
Questions about Onion
How do you stop an onion making you cry?
Chill it for about 30 minutes before cutting, then use a sharp knife and leave the root end until last; the root area releases many of the tear-triggering compounds when cut.
How do you caramelise onions without burning them?
Slice them evenly and cook in a wide pan with a little oil over low to medium-low heat, stirring every few minutes. Allow 30–45 minutes for them to turn deep golden and soft; add a splash of water if the pan starts to catch.
How should you store a whole onion?
Keep it in a cool, dry, dark place with good airflow, such as a mesh bag or open basket. Store onions away from potatoes, which release moisture and can encourage them to spoil.
Can you freeze chopped onion?
Yes. Spread the chopped onion on a tray to freeze, then transfer it to an airtight freezer bag; use it straight from frozen in soups, stews and sauces without thawing.
What can you use instead of onion in a recipe?
Use a similar amount of finely chopped shallot for a milder, sweeter flavour. For a recipe where onion is a main ingredient, leeks can work too, though they taste gentler.
Which dishes are made with onion?
Onion is a base for French onion soup, onion bhajis and many curries, stews and pasta sauces. For a quick side, cut it into wedges and roast at 200 °C for about 30 minutes, until tender and browned.
Can dogs eat onion?
No. Onion can be toxic to dogs, whether raw, cooked or dried, so keep onion-containing food and scraps out of reach.
Source: USDA FoodData Central 170100 · per 100 g · carbohydrate per EU label, fibre excluded
