A typical 1 cup serving of puffed millet contains 2.7 grams of protein (13 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 15% of the calories in puffed millet 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, puffed millet ranks 90th by protein per serving, and 607th out of all 796 foods on the site. Set against all-purpose flour, another grain entry in the database, a serving carries about 0.5 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 measured by volume at 21 g. The per-100 g figure lets you compare it directly against any other food here, whatever its serving.
Source: USDA FoodData Central #167724 - "Millet, puffed" (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
Puffed millet protein FAQ
How much protein is in puffed millet per 100 g?
Puffed millet has 13 g of protein per 100 g. A typical 1 cup serving (21 g) provides 2.7 g.
Is puffed millet a complete protein?
No. Puffed millet 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 puffed millet cover?
A 1 cup serving of puffed millet contains 2.7 g of protein, about 5% of the 50 g reference Daily Value.
Is puffed millet a good source of protein?
Puffed millet is only a minor source of protein, and about 15% 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 0.5 g less protein (all-purpose flour has 3.2 g per 1/4 cup).