How many calories are in Yellow Onion?

100 g of Yellow Onion has 18 kcal.

How much protein is in Yellow Onion?

Yellow Onion contains 1.5 g of protein per 100 g (3% of the 50 g Daily Value). About 36% of its calories come from protein. Compared with other vegetables, that is below the median (median 2.6 g).

How many carbs are in Yellow Onion?

Yellow Onion has 1.5 g of total carbohydrates per 100 g, including 3 g of fiber and 1.3 g of sugars. Label conventions differ: in the EU and some other regions carbohydrates are declared without fiber.

How much fat is in Yellow Onion?

Yellow Onion contains 0.5 g of fat per 100 g, of which 0.1 g is saturated (0.5% of the Daily Value).

How much sodium is in Yellow Onion?

100 g contains 4 mg of sodium, 0.2% of the 2,300 mg Daily Value.

Where does this nutrition data come from?

From Open Food Facts, record dated March 31, 2026. FoodFactly last checked it on November 12, 2026. Each value above shows whether it was measured, calculated or taken from a label.

Yellow Onion

Packaged product Vegetables Delhaize

Yellow Onion contains 18 kcal per 100 g.

Roughly 36% of its calories come from protein, with 36% from carbohydrates and 27% from fat (estimated with general energy factors).

That is less energy than the typical item in vegetables on FoodFactly, where the median is 144 kcal per 100 g across 29,937 products.

The values are as declared on the product label and entered by Open Food Facts contributors.

18kcal per 100 g

1.5 gprotein

1.5 gcarbohydrates

0.5 gfat

Nutrition facts

Amount

The source reports no household measures (such as cups or pieces) for this food, so only weights are offered.

Nutrition facts for the selected amount
Nutrient	Amount per 100 g	% DV
Calories L	18 kcal
Total fat L	0.5 g	0.6%
Saturated fat L	0.1 g	0.5%
Sodium L	4 mg	0.2%
Total carbohydrates L	1.5 g	0.5%
Dietary fiber L	3 g	11%
Total sugars L	1.3 g
Protein L	1.5 g	3%

% DV: percent of the FDA Daily Value for adults (reference amounts). Letters show how each value was obtained: M measured, C calculated, L label, Z assumed zero, I imputed. Vitamins and minerals not listed were not reported by the source.

Nutritional breakdown

Protein 36%
Carbohydrates 36%
Fat 27%

Approximate share of calories, using general energy factors (4 kcal/g protein and carbohydrate, 9 kcal/g fat, 7 kcal/g alcohol).

Nutritional insights

Protein1.5 gbelow the median for vegetables (median 2.6 g)
Fiber3 gabove the median for vegetables (median 2 g)
Sugars1.3 gbelow the median for vegetables (median 2.1 g)
Fat0.5 gbelow the median for vegetables (median 5.7 g)
Saturated fat0.1 gbelow the median for vegetables (median 1.2 g)
Sodium4 mgin the lowest quarter of vegetables (median 339 mg)
Protein per 100 kcal8.3 gprotein density, useful for comparing foods with different calorie levels

Product details

Brand: Delhaize
Barcode: 5400119587617
Category: Vegetables

Ingredients

Ingredients not reported.

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Per 100 g. Calories in kcal. n/a: not reported by the source.

Source of the nutrition information

Open Food Facts, record 5400119587617. License: ODbL 1.0 (Open Food Facts). Source record dated March 31, 2026. Imported November 12, 2026.

Last updated: November 12, 2026. Data quality score: 85/100 (how it is calculated).

Product data from Open Food Facts, made available under the Open Database License. Values are as declared on the label; labels can change over time, so check the package you have.

General nutrition information, not medical advice. Individual needs differ; see our disclaimer.