Protein content
A 1 slice serving of white bread contains 2.6 g of protein - only a minor source of protein, about 5% of the 50 g Daily Value.
Share of this food's calories that come from protein - it is more of an energy food than a protein food.
| Serving | 1 slice (29 g) |
|---|---|
| Protein per serving | 2.6 g |
| Protein per 100 g | 8.85 g |
| Calories per serving | 77 kcal |
| Protein density | 13% of calories |
| Share of 50 g Daily Value | 5% |
| Protein quality | Incomplete protein |
| Category | Grains |
| Food type | Prepared / processed |
| USDA record | FoodData Central #174924 |
A typical 1 slice serving of white bread contains 2.6 grams of protein (8.85 g per 100 g), which makes it only a minor source of protein. That covers roughly 5% of the 50 g reference Daily Value, so it adds toward your protein total for the day.
Around 13% of the calories in white bread 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.
Among the 111 grains in the database, white bread ranks 95th by protein per serving, and 619th out of all 796 foods on the site. Set against all-purpose flour, another grain entry in the database, a serving carries about 0.6 g less protein (all-purpose flour has 3.2 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 above is counted by piece at 29 g. Because pieces vary, the per-100 g figure is the one to use when comparing this against a food measured a different way.
Source: USDA FoodData Central #174924 - "Bread, white, commercially prepared (includes soft bread crumbs)" (SR Legacy, published 4/1/2019). Values are the published reference figures for that record, not lab measurements for a specific brand or batch.
Quick answers
White bread has 8.85 g of protein per 100 g. A typical 1 slice serving (29 g) provides 2.6 g.
No. White bread is an incomplete protein on its own; pairing it with other protein sources across the day covers the full range of essential amino acids.
A 1 slice serving of white bread contains 2.6 g of protein, about 5% of the 50 g reference Daily Value.
White bread is only a minor source of protein, and about 13% of its calories come from protein, which makes it more of an energy food than a protein food. Set against all-purpose flour, another grain entry in the database, a serving carries about 0.6 g less protein (all-purpose flour has 3.2 g per 1/4 cup).
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