How many calories are in Onion Buns?

100 g of Onion Buns has 270 kcal. Serving, 1 bun, 74 g (74 g): about 200 kcal.

How much protein is in Onion Buns?

Onion Buns contains 9.5 g of protein per 100 g (19% of the 50 g Daily Value), or 7 g in serving, 1 bun, 74 g (74 g). About 14% of its calories come from protein. Compared with other bread and baked goods, that is above the median (median 8.9 g).

How many carbs are in Onion Buns?

Onion Buns has 50 g of total carbohydrates per 100 g, including 1.4 g of fiber and 6.8 g of sugars.

How much fat is in Onion Buns?

Onion Buns contains 3.4 g of fat per 100 g, of which 0 g is saturated (0% of the Daily Value).

What vitamins and minerals does Onion Buns contain?

Per 100 g, the most notable amounts relative to the Daily Value are iron (15% DV). The full list is in the vitamins and minerals table above.

How much sodium is in Onion Buns?

100 g contains 459 mg of sodium, 20% of the 2,300 mg Daily Value.

Where does this nutrition data come from?

From USDA FoodData Central: Branded Foods, record dated June 3, 2026. FoodFactly last checked it on November 7, 2026. Each value above shows whether it was measured, calculated or taken from a label.

Onion Buns

Packaged product Bread and Baked Goods Franz

Onion Buns contains 270 kcal per 100 g. A serving, 1 bun, 74 g (74 g) provides about 200 kcal.

Roughly 75% of its calories come from carbohydrates, with 14% from protein and 11% from fat (estimated with general energy factors).

That is close to the median for bread and baked goods on FoodFactly (263 kcal per 100 g).

100 g provides 15% of the Daily Value for iron.

The values are label data submitted by the manufacturer to USDA FoodData Central.

Photo: Open Food Facts, CC BY-SA 3.0, Open Food Facts contributors

270kcal per 100 g

9.5 gprotein

50 gcarbohydrates

3.4 gfat

200kcal in serving, 1 bun, 74 g (74 g)

Nutrition facts

Amount

Nutrition facts for the selected amount
Nutrient	Amount per 100 g	% DV
Calories L	270 kcal
Total fat L	3.4 g	4%
Saturated fat L	0 g	0%
Trans fat L	0 g
Cholesterol L	0 mg	0%
Sodium L	459 mg	20%
Total carbohydrates L	50 g	18%
Dietary fiber L	1.4 g	5%
Total sugars L	6.8 g
Added sugars L	6.8 g	14%
Protein L	9.5 g	19%
Calcium L	53 mg	4%
Iron L	2.7 mg	15%
Potassium L	96 mg	2%

% 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 14%
Carbohydrates 75%
Fat 11%

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

Nutritional insights

Protein9.5 gabove the median for bread and baked goods (median 8.9 g)
Fiber1.4 gin the lowest quarter of bread and baked goods (median 3.5 g)
Sugars6.8 gin the top quarter of bread and baked goods (median 3 g)
Fat3.4 gbelow the median for bread and baked goods (median 3.6 g)
Saturated fat0 gin the lowest quarter of bread and baked goods (median 0.46 g)
Sodium459 mgbelow the median for bread and baked goods (median 464 mg)
Protein per 100 kcal3.5 gprotein density, useful for comparing foods with different calorie levels

Full nutrient profile

Fats and cholesterol (2)

Monounsaturated fat L	0.68 g
Polyunsaturated fat L	2 g

Carotenoids (1)

Vitamin D (D2 + D3), International Units L	0 IU

Values by source

More than one dataset describes this food. FoodFactly keeps each source's values separately instead of blending them. The headline values above come from USDA FoodData Central: Branded Foods.

Per 100 g	Open Food Facts	USDA Branded
Calories	270 kcal	270 kcal
Protein	9.5 g	9.5 g
Carbohydrates	50 g	50 g
Fat	3.4 g	3.4 g
Fiber	1.4 g	1.4 g
Sugars	6.8 g	6.8 g
Sodium	459 mg	459 mg

Product details

Brand: Franz
Barcode: 0072220001983
Quantity: 21 oz
Label serving: 1 BUN (74 g)
Category: Breads
Nutri-Score: C as computed by Open Food Facts
NOVA group: 4 processing level (1 to 4), as classified by Open Food Facts

Ingredients

enriched unbleached wheat flour (wheat flour, malted barley flour, niacin, reduced iron, thiamin mononitrate, riboflavin and folic acid), water, sugar, yeast, vegetable oil (canola and/or soy), contains 2% or less of each of the following: vital wheat gluten, salt, xanthan gum, yeast nutrient (ammonium sulfate), dough conditioners (sodium stearoyl lactylate, ascorbic acid, monocalcium phosphate), calcium sulfate, enzymes, calcium propionate (mold inhibitor), yellow corn flour, turmeric and annatto (which impart color), onion, poppy seeds,

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

Ingredient guides: Wheat flour Sugar Yeast Salt Onion

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Meergranen AH L&P	270	13 g	41 g	4.7 g
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Per 100 g. Calories in kcal. n/a: not reported by the source.

Source of the nutrition information

USDA FoodData Central: Branded Foods, record 2118904. License: CC0 1.0 (U.S. public domain). Source record dated February 16, 2018. Imported November 6, 2026.
Open Food Facts, record 0072220001983. License: ODbL 1.0 (Open Food Facts). Source record dated June 3, 2026. Imported November 7, 2026.

Last updated: November 7, 2026. Data quality score: 95/100 (how it is calculated).

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