Onion Buns
Packaged product Bread and Baked Goods Oroweat
Onion Buns contains 284 kcal per 100 g. A serving, 1 bun, 74 g (74 g) provides about 210 kcal.
Roughly 72% of its calories come from carbohydrates, with 15% from fat and 13% from protein (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 34% of the Daily Value for Niacin (B3), 31% of the Daily Value for Riboflavin (B2) and 15% of the Daily Value for iron.
The values are label data submitted by the manufacturer to USDA FoodData Central.
Nutrition facts
| Nutrient | Amount per 100 g | % DV |
|---|---|---|
| Calories L | 284 kcal | |
| Total fat L | 4.7 g | 6% |
| Saturated fat L | 1.4 g | 7% |
| Trans fat L | 0 g | |
| Cholesterol L | 0 mg | 0% |
| Sodium L | 459 mg | 20% |
| Total carbohydrates L | 51.4 g | 19% |
| Dietary fiber L | 2.7 g | 10% |
| Total sugars L | 5.4 g | |
| Added sugars L | 5.4 g | 11% |
| Protein L | 9.5 g | 19% |
| Vitamin A L | 0 µg | 0% |
| Vitamin C L | 0 mg | 0% |
| Vitamin E L | 0 mg | 0% |
| Vitamin K L | 0 µg | 0% |
| Thiamin (B1) L | 0 mg | 0% |
| Riboflavin (B2) L | 0.41 mg | 31% |
| Niacin (B3) L | 5.4 mg | 34% |
| Choline L | 0 mg | 0% |
| Calcium L | 108 mg | 8% |
| Iron L | 2.7 mg | 15% |
| Magnesium L | 0 mg | 0% |
| Phosphorus L | 0 mg | 0% |
| Potassium L | 122 mg | 3% |
| Zinc L | 0 mg | 0% |
| Copper L | 0 mg | 0% |
| Manganese L | 0 mg | 0% |
| Selenium L | 0 µg | 0% |
% 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 72%
- Fat 15%
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)
- Fiber2.7 gbelow the median for bread and baked goods (median 3.5 g)
- Sugars5.4 gin the top quarter of bread and baked goods (median 3 g)
- Fat4.7 gabove the median for bread and baked goods (median 3.6 g)
- Saturated fat1.4 gin the top quarter of bread and baked goods (median 0.4 g)
- Sodium459 mgbelow the median for bread and baked goods (median 464 mg)
- Protein per 100 kcal3.3 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 |
Sugars and starch (1)
| Starch L | 0 g |
|---|
Carotenoids (1)
| Vitamin D (D2 + D3), International Units L | 0 IU |
|---|
Other components (2)
| Caffeine L | 0 mg |
|---|---|
| Folic acid L | 81 µg |
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 | 284 kcal | 284 kcal |
| Protein | 9.5 g | 9.5 g |
| Carbohydrates | 51.4 g | 51.4 g |
| Fat | 4.1 g | 4.7 g |
| Fiber | 2.7 g | 2.7 g |
| Sugars | 5.4 g | 5.4 g |
| Sodium | 467 mg | 459 mg |
Product details
Ingredients
Unbleached enriched wheat flour [flour, malted barley flour, reduced iron, niacin, thiamin mononitrate (vitamin b1), riboflavin (vitamin b2), folic acid], water, sugar, yeast, onions, wheat gluten, soybean oil, salt, monoglycerides, calcium propionate (preservative), datem, corn flour, calcium sulfate, citric acid, spice & coloring, potassium iodate, monocalcium phosphate, soy lecithin.
As listed on the package and transcribed by Open Food Facts contributors. Always check the package for allergens.
Ingredient guides: Wheat flourSugarYeastOnionSalt
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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 Onion Buns?
100 g of Onion Buns has 284 kcal. Serving, 1 bun, 74 g (74 g): about 210 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 13% 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 51.4 g of total carbohydrates per 100 g, including 2.7 g of fiber and 5.4 g of sugars.
How much fat is in Onion Buns?
Onion Buns contains 4.7 g of fat per 100 g, of which 1.4 g is saturated (7% 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 Niacin (B3) (34% DV), Riboflavin (B2) (31% DV) and 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 February 26, 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
- USDA FoodData Central: Branded Foods, record 672274. License: CC0 1.0 (U.S. public domain). Source record dated July 11, 2019. Imported November 6, 2026.
- Open Food Facts, record 0073130026110. License: ODbL 1.0 (Open Food Facts). Source record dated February 26, 2026. Imported November 7, 2026.
Last updated: . Data quality score: 100/100 (how it is calculated).
General nutrition information, not medical advice. Individual needs differ; see our disclaimer.