Sliced Red Onions

Packaged product Beverages Sainsbury's

Sliced Red Onions contains 39 kcal per 100 g. A serving, 50 g (50 g) provides about 20 kcal.

Roughly 75% of its calories come from carbohydrates, with 13% from protein and 12% from fat (estimated with general energy factors).

That is less energy than the typical item in beverages on FoodFactly, where the median is 107 kcal per 100 g across 4,399 products.

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

Sliced Red Onions by Sainsbury's, product photo
Photo: Open Food Facts, CC BY-SA 3.0, Open Food Facts contributors
39kcal per 100 g
1.3 gprotein
7.3 gcarbohydrates
0.5 gfat
20kcal in serving, 50 g (50 g)

Nutrition facts

Nutrition facts for the selected amount
NutrientAmount per 100 g% DV
Calories L 39 kcal
Total fat L 0.5 g 0.6%
Saturated fat L 0.1 g 0.5%
Cholesterol L 0 mg 0%
Sodium L 4 mg 0.2%
Total carbohydrates L 7.3 g 3%
Dietary fiber L 1.9 g 7%
Total sugars L 5.6 g
Added sugars L 0 g 0%
Protein L 1.3 g 3%
Vitamin A L 0 µg0%
Vitamin C L 3.9 mg4%
Vitamin D L 0 µg0%
Vitamin E L 0.045 mg0.3%
Thiamin (B1) L 0.025 mg2%
Riboflavin (B2) L 0.025 mg2%
Niacin (B3) L 0.025 mg0.2%
Pantothenic acid (B5) L 0.15 mg3%
Vitamin B6 L 0.1 mg6%
Folate (B9) L 29.6 µg7%
Vitamin B12 L 0 µg0%
Calcium L 25 mg2%
Iron L 0 mg0%
Magnesium L 9 mg2%
Phosphorus L 37 mg3%
Potassium L 190 mg4%
Zinc L 0.23 mg2%
Copper L 0 mg0%
Manganese L 0.1 mg4%
Selenium L 2.3 µg4%
Iodine L 5 µg3%

% 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: 13%Carbohydrates: 75%Fat: 12%39kcal / 100 g
  • Protein 13%
  • Carbohydrates 75%
  • Fat 12%

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

Vitamins and minerals, % Daily Value per 100 g

Folate (B9)7%Vitamin B66%Manganese4%Vitamin C4%Selenium4%Potassium4%Iodine3%Pantothenic acid (B5)3%Phosphorus3%Magnesium2%

Nutritional insights

  • Protein1.3 gbelow the median for beverages (median 2.1 g)
  • Fiber1.9 gbelow the median for beverages (median 3.6 g)
  • Sugars5.6 gabove the median for beverages (median 2 g)
  • Fat0.5 gbelow the median for beverages (median 0.63 g)
  • Saturated fat0.1 gbelow the median for beverages (median 0.2 g)
  • Sodium4 mgin the lowest quarter of beverages (median 40 mg)
  • Protein per 100 kcal3.3 gprotein density, useful for comparing foods with different calorie levels
  • Water89.6 gwater per 100 g, which largely explains differences between raw, cooked and dried forms

Full nutrient profile

Sugars and starch (1)
Starch L0.25 g
Carotenoids (1)
Beta-carotene L25 µg
Other components (2)
Water L89.6 g
Alcohol L0 g

Product details

Brand
Sainsbury's
Barcode
00399494
Quantity
150g
Label serving
50 g
Category
groceries
Nutri-Score
A as computed by Open Food Facts
NOVA group
1 processing level (1 to 4), as classified by Open Food Facts

Ingredients

Red Onion.

As listed on the package and transcribed by Open Food Facts contributors. Always check the package for allergens.

Ingredient guides: Onion

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

Frequently asked questions

How many calories are in Sliced Red Onions?

100 g of Sliced Red Onions has 39 kcal. Serving, 50 g (50 g): about 20 kcal.

How much protein is in Sliced Red Onions?

Sliced Red Onions contains 1.3 g of protein per 100 g (3% of the 50 g Daily Value), or 0.65 g in serving, 50 g (50 g). About 13% of its calories come from protein. Compared with other beverages, that is below the median (median 2.1 g).

How many carbs are in Sliced Red Onions?

Sliced Red Onions has 7.3 g of total carbohydrates per 100 g, including 1.9 g of fiber and 5.6 g of sugars. Label conventions differ: in the EU and some other regions carbohydrates are declared without fiber.

How much fat is in Sliced Red Onions?

Sliced Red Onions 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 Sliced Red Onions?

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 27, 2026. FoodFactly last checked it on November 7, 2026. Each value above shows whether it was measured, calculated or taken from a label.

Source of the nutrition information

  • Open Food Facts, record 00399494. License: ODbL 1.0 (Open Food Facts). Source record dated March 27, 2026. Imported November 7, 2026.

Last updated: . Data quality score: 100/100 (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.