Every 100 kcal of amaranth brings 3.7 g of protein. On that measure it ranks 31st of the 111 grains in this database and 549th of all 796 foods on the site. Measured by weight instead, its 3.8 g per 100 g ranks 91st in its group.
Around 15% of the calories in amaranth 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, amaranth has 2.4 g of protein for each gram of fat (3.8 g against 1.58 g per 100 g).
Set against naan, another grain entry in the database, a serving carries about 0.6 g more protein (naan has 8.7 g per 1 piece).
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 246 g, and it covers about 19% of the 50 g FDA Daily Value for protein.
One of the few grains with a complete essential amino acid profile.
Serving sizes
Protein in common portions of amaranth
Protein and calories in Amaranth for 100 g, the site serving and USDA household portions.
Portion
Weight
Protein
Calories
100 g
100 g
3.8 g
102 kcal
1 cup cooked (serving used here)
246 g
9.3 g
251 kcal
The USDA record lists no other household measure for this food; 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.
3.8 g. The 1 cup cooked serving used on this page weighs 246 g and so carries 9.3 g.
How much protein do you get per 100 calories of amaranth?
3.7 g. That figure divides its 3.8 g of protein per 100 g by its 102 kcal per 100 g, so it does not depend on serving size.
Is the protein in amaranth complete?
Yes. The protein in amaranth 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 amaranth?
About 19%. One 1 cup cooked serving has 9.3 g, and the FDA Daily Value for protein is 50 g.
Figures from USDA FoodData Central record #170683 (Amaranth grain, cooked), 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.