Every 100 kcal of soy sauce brings 15.4 g of protein. On that measure it ranks 3rd of the 31 soy foods in this database and 130th of all 796 foods on the site. Measured by weight instead, its 8.14 g per 100 g ranks 23rd in its group.
About 61% of the calories in soy sauce 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, soy sauce has 14.3 g of protein for each gram of fat (8.14 g against 0.57 g per 100 g).
Set against meatless deli slices, another soy food entry in the database, a serving carries about 3.7 g less protein (meatless deli slices has 5 g per 1 slice).
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 16 g, and it covers about 3% of the 50 g FDA Daily Value for protein.
Serving sizes
Protein in common portions of soy sauce
Protein and calories in Soy sauce for 100 g, the site serving and USDA household portions.
Portion
Weight
Protein
Calories
100 g
100 g
8.14 g
53 kcal
1 tbsp (serving used here)
16 g
1.3 g
8 kcal
1 tsp
5.3 g
0.4 g
3 kcal
1 cup
255 g
20.8 g
135 kcal
1 individual packet
8.9 g
0.7 g
5 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 soy sauce
The nine essential amino acids in Soy sauce, per 100 g, per serving and per gram of protein.
Amino acid
Per 100 g
Per serving
mg per g protein
leucine
0.537 g
0.09 g
66
lysine
0.381 g
0.06 g
47
valine
0.332 g
0.05 g
41
isoleucine
0.318 g
0.05 g
39
threonine
0.271 g
0.04 g
33
phenylalanine
0.353 g
0.06 g
43
methionine
0.097 g
0.02 g
12
histidine
0.174 g
0.03 g
21
tryptophan
0.096 g
0.02 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.
8.14 g. The 1 tbsp serving used on this page weighs 16 g and so carries 1.3 g.
How much protein do you get per 100 calories of soy sauce?
15.4 g. That figure divides its 8.14 g of protein per 100 g by its 53 kcal per 100 g, so it does not depend on serving size.
Is the protein in soy sauce complete?
Yes. The protein in soy sauce 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 soy sauce?
About 3%. One 1 tbsp serving has 1.3 g, and the FDA Daily Value for protein is 50 g.
Figures from USDA FoodData Central record #174277 (Soy sauce made from soy and wheat (shoyu)), 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.