Every 100 kcal of eastern oysters brings 11.2 g of protein. On that measure it ranks 99th of the 121 seafood in this database and 227th of all 796 foods on the site. Measured by weight instead, its 11.4 g per 100 g ranks 116th in its group.
Protein accounts for roughly 45% of the calories in eastern oysters, making it very protein-dense. The rest comes from fat and carbohydrate, so it adds a solid amount of protein while still carrying real energy - useful when you are eating to a calorie target rather than under one.
Weight for weight, eastern oysters has 3.3 g of protein for each gram of fat (11.4 g against 3.42 g per 100 g).
Set against imitation shrimp (surimi), another seafood entry in the database, a serving carries about 0.8 g less protein (imitation shrimp (surimi) has 10.5 g per 3 oz).
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 19% of the 50 g FDA Daily Value for protein.
Lower in protein than most shellfish, but an exceptional source of zinc.
Serving sizes
Protein in common portions of eastern oysters
Protein and calories in Eastern oysters for 100 g, the site serving and USDA household portions.
Portion
Weight
Protein
Calories
100 g
100 g
11.4 g
102 kcal
3 oz cooked (serving used here)
85 g
9.7 g
87 kcal
6 medium
42 g
4.8 g
43 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 eastern oysters
The nine essential amino acids in Eastern oysters, per 100 g, per serving and per gram of protein.
Amino acid
Per 100 g
Per serving
mg per g protein
leucine
0.716 g
0.61 g
63
lysine
0.762 g
0.65 g
67
valine
0.523 g
0.44 g
46
isoleucine
0.459 g
0.39 g
40
threonine
0.046 g
0.04 g
4
phenylalanine
0.413 g
0.35 g
36
methionine
0.257 g
0.22 g
23
histidine
0.22 g
0.19 g
19
tryptophan
0.138 g
0.12 g
12
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.
Related
Other seafood by protein per calorie
Swap for more protein per calorie
Florida pompano - 11.2 g per 100 kcal, 20.1 g per 3 oz cooked
11.4 g. The 3 oz cooked serving used on this page weighs 85 g and so carries 9.7 g.
How much protein do you get per 100 calories of eastern oysters?
11.2 g. That figure divides its 11.4 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 eastern oysters complete?
Yes. The protein in eastern oysters 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 eastern oysters?
About 19%. One 3 oz cooked serving has 9.7 g, and the FDA Daily Value for protein is 50 g.
Figures from USDA FoodData Central record #171980 (Mollusks, oyster, eastern, wild, cooked, moist 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.