Protein content
4.3 g of protein in 1 bun (44 g) of hamburger bun, or 3.5 g for every 100 kcal it supplies.
Share of this food's calories that come from protein - it is more of an energy food than a protein food.
| Protein per 100 kcal | 3.5 g |
|---|---|
| Protein per 100 g | 9.77 g |
| Protein per serving | 4.3 g in 1 bun (44 g) |
| Calories from protein | 14% |
| Protein to fat | 2.5 g per 1 g fat |
| Rank in grains, per 100 kcal | 45th of 111 |
| Rank of all foods, per 100 g | 455th of 796 |
| Share of 50 g Daily Value | 9% per serving |
| Protein quality | Incomplete protein |
One 1 bun, 4.3 g protein.
Every 100 kcal of hamburger bun brings 3.5 g of protein. On that measure it ranks 45th of the 111 grains in this database and 576th of all 796 foods on the site. Measured by weight instead, its 9.77 g per 100 g ranks 45th in its group.
Around 14% of the calories in hamburger bun come from protein, so it is more of an energy food than a protein food. It contributes to a day's protein total, but the bulk of what it delivers is energy rather than amino acids - treat it as a contributor alongside a denser source, not as the protein in a meal.
Weight for weight, hamburger bun has 2.5 g of protein for each gram of fat (9.77 g against 3.91 g per 100 g).
Set against buckwheat flour, another grain entry in the database, a serving carries about 0.5 g more protein (buckwheat flour has 3.8 g per 1/4 cup).
It is an incomplete protein on its own; pairing it with other plant foods across the day covers the full range of essential amino acids. The serving quoted here is counted by piece at 44 g, and it covers about 9% of the 50 g FDA Daily Value for protein.
Serving sizes
| Portion | Weight | Protein | Calories |
|---|---|---|---|
| 100 g | 100 g | 9.77 g | 279 kcal |
| 1 bun (serving used here) | 44 g | 4.3 g | 123 kcal |
| 1 oz | 28.4 g | 2.8 g | 79 kcal |
Portion weights are the household measures listed on the USDA record; protein and calories scale from the per-100 g figures.
Related
Highest-protein grains per serving · Most protein-dense foods · Highest protein per 100 g
Quick answers
9.77 g. The 1 bun serving used on this page weighs 44 g and so carries 4.3 g.
3.5 g. That figure divides its 9.77 g of protein per 100 g by its 279 kcal per 100 g, so it does not depend on serving size.
No. On its own, the protein in hamburger bun is short of at least one essential amino acid; other protein sources across the day fill the gap.
About 9%. One 1 bun serving has 4.3 g, and the FDA Daily Value for protein is 50 g.
Figures from USDA FoodData Central record #172796 (Rolls, hamburger or hotdog, plain), SR Legacy data. USDA data is in the public domain. Values are the published reference figures for that record, not lab measurements for a specific brand or batch.