Calories in common portions
| Portion | Weight | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|---|
| 1 slice, thin | 9 g | 4 | 0.1 g | 0.8 g | 0 g |
| 1 tbsp chopped | 10 g | 4 | 0.1 g | 0.9 g | 0 g |
| 1 slice, medium (⅛" thick) | 14 g | 6 | 0.2 g | 1.3 g | 0 g |
| 1 slice, large (¼" thick) | 38 g | 15 | 0.4 g | 3.5 g | 0 g |
| 10 rings | 60 g | 24 | 0.7 g | 5.6 g | 0.1 g |
| 1 small | 70 g | 28 | 0.8 g | 6.5 g | 0.1 g |
| 100 g | 100 g | 40 | 1.1 g | 9.3 g | 0.1 g |
| 1 medium (2½" across) | 110 g | 44 | 1.2 g | 10.3 g | 0.1 g |
| 1 cup, sliced | 115 g | 46 | 1.3 g | 10.7 g | 0.1 g |
| 1 large | 150 g | 60 | 1.7 g | 14 g | 0.2 g |
| 1 cup, chopped | 160 g | 64 | 1.8 g | 14.9 g | 0.2 g |
Where the calories come from
Protein 10.3%Carbohydrate 87.6%Fat 2.1%
Shares use 4 calories per gram for protein and carbohydrate and 9 for fat, so they may not match USDA’s calorie total exactly. Try the macro calculator.
Good to know
- A medium onion (110 g) has about 44 calories and a large one (150 g) about 60. Onions add flavor to a dish for very few calories.
- Frying onions doesn’t add calories by itself, but the oil or butter they cook in does. Log that fat separately.
- Boiled onion has 44 calories per 100 g against 40 raw, because some water cooks out. If you weigh onion after cooking, use a cooked entry.
- A tablespoon of chopped onion (10 g) has about 4 calories. Scallions (spring onions) have 32 calories per 100 g, so a chopped tablespoon (6 g) is about 2.
In our recipes
The Calorify recipes that use this food, how much they use, and the calories it adds to each whole recipe.
- Spinach and feta omelette2 tbsp · 20 g · recipe serves 18 cal
- Shakshuka1 medium · 110 g · recipe serves 244 cal
- Lentil and tomato soup1 medium · 110 g · recipe serves 444 cal
- Beef and black bean chili1 medium · 110 g · recipe serves 444 cal
- Spaghetti bolognese1 medium · 110 g · recipe serves 444 cal
Compare per 100 g
| Food | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|
| Onion (this page) | 40 | 1.1 g | 9.3 g | 0.1 g |
| Onions, cooked, boiled, drained, without salt | 44 | 1.4 g | 10.2 g | 0.2 g |
| Onions, spring or scallions (includes tops and bulb), raw | 32 | 1.8 g | 7.3 g | 0.2 g |
| Broccoli | 34 | 2.8 g | 6.6 g | 0.4 g |
| Spinach | 23 | 2.9 g | 3.6 g | 0.4 g |
| Carrots | 41 | 0.9 g | 9.6 g | 0.2 g |
| Baked potato | 93 | 2.5 g | 21.2 g | 0.1 g |
| Sweet potato | 90 | 2 g | 20.7 g | 0.2 g |
| Garlic | 149 | 6.4 g | 33.1 g | 0.5 g |
| Tomato | 18 | 0.9 g | 3.9 g | 0.2 g |
| Canned tomatoes | 16 | 0.8 g | 3.5 g | 0.3 g |
| Red bell pepper | 26 | 1 g | 6 g | 0.3 g |
| Cucumber | 15 | 0.7 g | 3.6 g | 0.1 g |
| Romaine lettuce | 17 | 1.2 g | 3.3 g | 0.3 g |
| Mushrooms | 22 | 3.1 g | 3.3 g | 0.3 g |
Source
USDA FoodData Central, SR Legacy (April 2019): Onions, raw (FDC ID 170000) ↗. Values are per 100 g of edible portion; Calorify scaled them to each portion and rounded the results. Comparisons use FDC ID 170001, FDC ID 170005.
General education, not individualized nutrition advice. Read our editorial approach.