A typical 1 regular slice serving of multigrain bread contains 3.5 grams of protein (13.4 g per 100 g), which makes it a moderate source of protein. That covers roughly 7% of the 50 g reference Daily Value, so it adds toward your protein total for the day.
Around 20% of the calories in multigrain bread come from protein, so it is moderately protein-dense. 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, multigrain bread ranks 71st by protein per serving, and 573rd out of all 796 foods on the site. Set against bran flakes, another grain entry in the database, a serving carries about 0.5 g less protein (bran flakes has 4 g per 1 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 26 g. Because pieces vary, the per-100 g figure is the one to use when comparing this against a food measured a different way.
Blending grains and seeds improves the amino acid balance over a single grain.
Source: USDA FoodData Central #168013 - "Bread, multi-grain (includes whole-grain)" (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
Multigrain bread protein FAQ
How much protein is in multigrain bread per 100 g?
Multigrain bread has 13.4 g of protein per 100 g. A typical 1 regular slice serving (26 g) provides 3.5 g.
Is multigrain bread a complete protein?
No. Multigrain 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 multigrain bread cover?
A 1 regular slice serving of multigrain bread contains 3.5 g of protein, about 7% of the 50 g reference Daily Value.
Is multigrain bread a good source of protein?
Multigrain bread is a moderate source of protein, and about 20% of its calories come from protein, which makes it moderately protein-dense. Set against bran flakes, another grain entry in the database, a serving carries about 0.5 g less protein (bran flakes has 4 g per 1 cup).