A typical 1 slice serving of wheat bread contains 3.1 grams of protein (10.7 g per 100 g), which makes it a moderate source of protein. That covers roughly 6% of the 50 g reference Daily Value, so it adds toward your protein total for the day.
Around 16% of the calories in wheat 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, wheat bread ranks 81st by protein per serving, and 590th out of all 796 foods on the site. Set against instant rice, another grain entry in the database, a serving carries about 0.5 g less protein (instant rice has 3.6 g per 1 cup cooked).
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.
Made mostly from refined flour, unlike 100% whole wheat bread.
Source: USDA FoodData Central #172686 - "Bread, wheat" (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
Wheat bread protein FAQ
How much protein is in wheat bread per 100 g?
Wheat bread has 10.7 g of protein per 100 g. A typical 1 slice serving (29 g) provides 3.1 g.
Is wheat bread a complete protein?
No. Wheat 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.
How much of the Daily Value does a serving of wheat bread cover?
A 1 slice serving of wheat bread contains 3.1 g of protein, about 6% of the 50 g reference Daily Value.
Is wheat bread a good source of protein?
Wheat bread is a moderate source of protein, and about 16% of its calories come from protein, which makes it more of an energy food than a protein food. Set against instant rice, another grain entry in the database, a serving carries about 0.5 g less protein (instant rice has 3.6 g per 1 cup cooked).