Every 100 kcal of grape-nuts brings 3.1 g of protein. On that measure it ranks 66th of the 111 grains in this database and 620th of all 796 foods on the site. Measured by weight instead, its 11.2 g per 100 g ranks 24th in its group.
Around 12% of the calories in grape-nuts 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, grape-nuts has 6.2 g of protein for each gram of fat (11.2 g against 1.81 g per 100 g).
Set against protein-fortified spaghetti, another grain entry in the database, a serving carries about 0.6 g more protein (protein-fortified spaghetti has 12.4 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 quoted here is measured by volume at 116 g, and it covers about 26% of the 50 g FDA Daily Value for protein.
Very dense, so a level cup weighs far more than a cup of flakes.
Serving sizes
Protein in common portions of grape-nuts
Protein and calories in Grape-Nuts for 100 g, the site serving and USDA household portions.
Portion
Weight
Protein
Calories
100 g
100 g
11.2 g
361 kcal
1 cup (serving used here)
116 g
13 g
419 kcal
0.5 cup (1 NLEA serving)
58 g
6.5 g
209 kcal
Portion weights are the household measures listed on the USDA record; protein and calories scale from the per-100 g figures.
SampleWhat goal trends look like after a week
109 g
Average per logged day
4 of 7
Days goal met
71%
Complete-protein share
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Sample figures for one made-up week against a 110 g goal, not your data. Red bars met the goal. Your own log fills this in with Premium.
11.2 g. The 1 cup serving used on this page weighs 116 g and so carries 13 g.
How much protein do you get per 100 calories of grape-nuts?
3.1 g. That figure divides its 11.2 g of protein per 100 g by its 361 kcal per 100 g, so it does not depend on serving size.
Is the protein in grape-nuts complete?
No. On its own, the protein in grape-nuts is short of at least one essential amino acid; other protein sources across the day fill the gap.
What share of the protein Daily Value is one serving of grape-nuts?
About 26%. One 1 cup serving has 13 g, and the FDA Daily Value for protein is 50 g.
Figures from USDA FoodData Central record #171647 (Cereals ready-to-eat, POST, GRAPE-NUTS Cereal), 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.