Food
Onion bread nutrition facts
A typical portion of onion bread (1 large or thick slice; 43 g, onion) has 100 calories and 4g of protein (USDA FoodData Central). USDA lists 2 descriptions of it: per 100 g they range from 238 calories (onion) to 262 (toasted).
Nutrition Facts
* The % Daily Value (DV) tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice. Protein % DV here is not corrected for protein quality.
USDA values per 100 g for Bread, onion, scaled to the portion. Check the USDA record.
- Protein per 100 g
- 8.8g
- more than 50% of 8,218 USDA reference foods
- Calories per 100 g
- 238
- more than 62% of reference foods
- Sodium per 100 g
- 482mg
- more than 83% of reference foods
1 large or thick slice weighs 43 g in USDA's record for Bread, onion (FDC 2707633); across 2 records of onion bread USDA weighs it at 39 to 43 g, so a linked record can show a different gram weight for the same measure.
Where the calories come from: 74% carbohydrate, 11% fat and 15% protein (4 calories a gram of protein or carbohydrate, 9 of fat).
Also rich in
Source: USDA FoodData Central (FDC 2707633), every nutrient the record reports; FDA Daily Values, 21 CFR 101.9.
Every form of onion bread USDA describes
Toasted has the most calories per 100 g (262); the fewest: Onion (238)
| USDA description | Calories | Protein | Fat | Sodium |
|---|---|---|---|---|
| Bread, onion | 238 | 8.8 g | 3 g | 482 mg |
| Bread, onion, toasted | 262 | 9.7 g | 3.2 g | 530 mg |
Every nutrient in this record (65)
The portion is 1 large or thick slice (43 g); % DV is for that portion.
Energy, macronutrients and sugars (12)
| Nutrient | Per portion | Per 100 g | % DV |
|---|---|---|---|
| Protein | 3.79 g | 8.81 g | 8% |
| Total lipid (fat) | 1.27 g | 2.95 g | 2% |
| Carbohydrate, by difference | 19.1 g | 44.3 g | 7% |
| Energy | 102 kcal | 238 kcal | |
| Alcohol, ethyl | 0 g | 0 g | |
| Water | 18.1 g | 42.2 g | |
| Total Sugars | 1.43 g | 3.33 g | |
| Fiber, total dietary | 0.73 g | 1.70 g | 3% |
| Cholesterol | 1.72 mg | 4.00 mg | 1% |
| Fatty acids, total saturated | 0.43 g | 0.99 g | 2% |
| Fatty acids, total monounsaturated | 0.30 g | 0.69 g | |
| Fatty acids, total polyunsaturated | 0.29 g | 0.68 g |
Minerals (9)
| Nutrient | Per portion | Per 100 g | % DV |
|---|---|---|---|
| Calcium, Ca | 15.5 mg | 36.0 mg | 1% |
| Iron, Fe | 1.34 mg | 3.11 mg | 7% |
| Magnesium, Mg | 10.3 mg | 24.0 mg | 2% |
| Phosphorus, P | 40.0 mg | 93.0 mg | 3% |
| Potassium, K | 53.3 mg | 124 mg | 1% |
| Sodium, Na | 207 mg | 482 mg | 9% |
| Zinc, Zn | 0.31 mg | 0.72 mg | 3% |
| Copper, Cu | 0.050 mg | 0.12 mg | 6% |
| Selenium, Se | 8.08 µg | 18.8 µg | 15% |
Vitamins (23)
| Nutrient | Per portion | Per 100 g | % DV |
|---|---|---|---|
| Retinol | 6.88 µg | 16.0 µg | |
| Vitamin A, RAE | 7.31 µg | 17.0 µg | 1% |
| Carotene, beta | 1.29 µg | 3.00 µg | |
| Carotene, alpha | 0 µg | 0 µg | |
| Vitamin E (alpha-tocopherol) | 0.12 mg | 0.28 mg | 1% |
| Vitamin D (D2 + D3) | 0.086 µg | 0.20 µg | 0% |
| Cryptoxanthin, beta | 0 µg | 0 µg | |
| Lycopene | 0 µg | 0 µg | |
| Lutein + zeaxanthin | 17.2 µg | 40.0 µg | |
| Vitamin C, total ascorbic acid | 0.39 mg | 0.90 mg | 0% |
| Thiamin | 0.21 mg | 0.49 mg | 17% |
| Riboflavin | 0.11 mg | 0.26 mg | 9% |
| Niacin | 1.50 mg | 3.48 mg | 9% |
| Vitamin B-6 | 0.031 mg | 0.072 mg | 2% |
| Folate, total | 30.1 µg | 70.0 µg | |
| Vitamin B-12 | 0.021 µg | 0.050 µg | 1% |
| Choline, total | 3.87 mg | 9.00 mg | 1% |
| Vitamin K (phylloquinone) | 0.34 µg | 0.80 µg | 0% |
| Folic acid | 18.5 µg | 43.0 µg | |
| Folate, food | 11.2 µg | 26.0 µg | |
| Folate, DFE | 43.0 µg | 100 µg | 11% |
| Vitamin E, added | 0 mg | 0 mg | |
| Vitamin B-12, added | 0 µg | 0 µg |
Fatty acids (19)
| Nutrient | Per portion | Per 100 g | % DV |
|---|---|---|---|
| SFA 4:0 | 0.012 g | 0.027 g | |
| SFA 6:0 | 0.0082 g | 0.019 g | |
| SFA 8:0 | 0.0052 g | 0.012 g | |
| SFA 10:0 | 0.012 g | 0.027 g | |
| SFA 12:0 | 0.014 g | 0.032 g | |
| SFA 14:0 | 0.044 g | 0.10 g | |
| SFA 16:0 | 0.23 g | 0.53 g | |
| SFA 18:0 | 0.090 g | 0.21 g | |
| MUFA 18:1 | 0.28 g | 0.66 g | |
| PUFA 18:2 | 0.27 g | 0.64 g | |
| PUFA 18:3 | 0.019 g | 0.045 g | |
| PUFA 20:4 | 0.00043 g | 0.0010 g | |
| PUFA 22:6 n-3 (DHA) | 0 g | 0 g | |
| MUFA 16:1 | 0.012 g | 0.028 g | |
| PUFA 18:4 | 0 g | 0 g | |
| MUFA 20:1 | 0.00086 g | 0.0020 g | |
| PUFA 20:5 n-3 (EPA) | 0 g | 0 g | |
| MUFA 22:1 | 0 g | 0 g | |
| PUFA 22:5 n-3 (DPA) | 0.00043 g | 0.0010 g |
Source: USDA FoodData Central, FDC 2707633: every value the record reports, per 100 g as USDA gives it and scaled to the portion; Daily Values: 21 CFR 101.9.
Source: USDA FoodData Central (SR Legacy, Foundation Foods and Survey foods), April 30, 2026 release.
Questions
How many calories are in onion bread?
100 in 1 large or thick slice (43 g) of onion; 238 to 262 per 100 g across USDA's descriptions.
How much protein is in onion bread?
4g in 1 large or thick slice; 8.8 g per 100 g.
How much sodium is in onion bread?
210mg in 1 large or thick slice; 482 mg per 100 g. Salt added in cooking changes it: USDA lists salted and unsalted forms separately where it measured both.
Sources for this page
- USDA FoodData Central
- the food and product records, April 30, 2026 release. fdc.nal.usda.gov
- FoodData Central documentation
- what each data type is and how branded records are submitted. fdc.nal.usda.gov
- USDA Food and Nutrient Database for Dietary Studies
- the survey foods and their portions. ars.usda.gov
- 21 CFR 101.9, Nutrition labeling of food
- the label format, rounding and Daily Values. ecfr.gov
- FDA, How to Understand and Use the Nutrition Facts Label
- the 5% and 20% Daily Value rule. fda.gov