Every 100 kcal of grouper brings 21 g of protein. On that measure it ranks 22nd of the 121 seafood in this database and 29th of all 796 foods on the site. Measured by weight instead, its 24.8 g per 100 g ranks 33rd in its group.
About 84% of the calories in grouper come from protein, which makes it extremely protein-dense - close to the practical ceiling for a whole food. Foods in this band are the ones that let you raise your protein intake without raising your calorie intake much at all.
Weight for weight, grouper has 19.1 g of protein for each gram of fat (24.8 g against 1.3 g per 100 g).
Set against canned clams, another seafood entry in the database, a serving carries about 0.5 g more protein (canned clams has 20.6 g per 3 oz drained).
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 weight at 85 g, and it covers about 42% of the 50 g FDA Daily Value for protein.
Serving sizes
Protein in common portions of grouper
Protein and calories in Grouper for 100 g, the site serving and USDA household portions.
Portion
Weight
Protein
Calories
100 g
100 g
24.8 g
118 kcal
3 oz cooked (serving used here)
85 g
21.1 g
100 kcal
1 fillet
202 g
50.1 g
238 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 grouper
The nine essential amino acids in Grouper, per 100 g, per serving and per gram of protein.
Amino acid
Per 100 g
Per serving
mg per g protein
leucine
2.02 g
1.72 g
81
lysine
2.28 g
1.94 g
92
valine
1.28 g
1.09 g
52
isoleucine
1.14 g
0.97 g
46
threonine
1.09 g
0.93 g
44
phenylalanine
0.97 g
0.82 g
39
methionine
0.735 g
0.62 g
30
histidine
0.731 g
0.62 g
29
tryptophan
0.278 g
0.24 g
11
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.
24.8 g. The 3 oz cooked serving used on this page weighs 85 g and so carries 21.1 g.
How much protein do you get per 100 calories of grouper?
21 g. That figure divides its 24.8 g of protein per 100 g by its 118 kcal per 100 g, so it does not depend on serving size.
Is the protein in grouper complete?
Yes. The protein in grouper 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 grouper?
About 42%. One 3 oz cooked serving has 21.1 g, and the FDA Daily Value for protein is 50 g.
Figures from USDA FoodData Central record #171963 (Fish, grouper, mixed species, cooked, dry heat), 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.