Every 100 kcal of buckwheat flour brings 3.8 g of protein. On that measure it ranks 28th of the 111 grains in this database and 544th of all 796 foods on the site. Measured by weight instead, its 12.6 g per 100 g ranks 16th in its group.
Around 15% of the calories in buckwheat flour 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, buckwheat flour has 4.1 g of protein for each gram of fat (12.6 g against 3.1 g per 100 g).
Set against hamburger bun, another grain entry in the database, a serving carries about 0.5 g less protein (hamburger bun has 4.3 g per 1 bun).
It is a complete protein - it supplies all nine essential amino acids in adequate amounts, so it can carry a meal's protein on its own. The serving quoted here is measured by volume at 30 g, and it covers about 8% of the 50 g FDA Daily Value for protein.
Buckwheat is a seed, not a cereal, and its protein is essentially complete.
Serving sizes
Protein in common portions of buckwheat flour
Protein and calories in Buckwheat flour for 100 g, the site serving and USDA household portions.
Portion
Weight
Protein
Calories
100 g
100 g
12.6 g
335 kcal
1/4 cup (serving used here)
30 g
3.8 g
101 kcal
1 cup
120 g
15.1 g
402 kcal
Portion weights are the household measures listed on the USDA record; protein and calories scale from the per-100 g figures.
Amino acids
Essential amino acids in buckwheat flour
The nine essential amino acids in Buckwheat flour, per 100 g, per serving and per gram of protein.
Amino acid
Per 100 g
Per serving
mg per g protein
leucine
0.792 g
0.24 g
63
lysine
0.64 g
0.19 g
51
valine
0.646 g
0.19 g
51
isoleucine
0.474 g
0.14 g
38
threonine
0.482 g
0.14 g
38
phenylalanine
0.495 g
0.15 g
39
methionine
0.164 g
0.05 g
13
histidine
0.294 g
0.09 g
23
tryptophan
0.183 g
0.05 g
15
Per-100 g values are the amino acid analysis on the USDA record. The serving and per-gram-of-protein columns are arithmetic on those values; they are not a protein quality score.
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.
12.6 g. The 1/4 cup serving used on this page weighs 30 g and so carries 3.8 g.
How much protein do you get per 100 calories of buckwheat flour?
3.8 g. That figure divides its 12.6 g of protein per 100 g by its 335 kcal per 100 g, so it does not depend on serving size.
Is the protein in buckwheat flour complete?
Yes. The protein in buckwheat flour supplies all nine essential amino acids in adequate amounts, so it can carry a meal's protein on its own.
What share of the protein Daily Value is one serving of buckwheat flour?
About 8%. One 1/4 cup serving has 3.8 g, and the FDA Daily Value for protein is 50 g.
Figures from USDA FoodData Central record #170687 (Buckwheat flour, whole-groat), 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.