Every 100 kcal of yogurt (nonfat, plain) brings 10.2 g of protein. On that measure it ranks 7th of the 81 dairy foods in this database and 245th of all 796 foods on the site. Measured by weight instead, its 5.73 g per 100 g ranks 59th in its group.
Protein accounts for roughly 41% of the calories in yogurt (nonfat, plain), 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.
USDA lists 0.18 g of fat per 100 g of yogurt (nonfat, plain), too little for a protein-to-fat ratio to mean much.
Set against romano cheese, another dairy food entry in the database, a serving carries about 0.8 g more protein (romano cheese has 8.9 g per 1 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 counted by piece at 170 g, and it covers about 19% of the 50 g FDA Daily Value for protein.
Serving sizes
Protein in common portions of yogurt (nonfat, plain)
Protein and calories in Yogurt (nonfat, plain) for 100 g, the site serving and USDA household portions.
Portion
Weight
Protein
Calories
100 g
100 g
5.73 g
56 kcal
1 container (serving used here)
170 g
9.7 g
95 kcal
1 container (8 oz)
227 g
13 g
127 kcal
1 cup (8 fl oz)
245 g
14 g
137 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 yogurt (nonfat, plain)
The nine essential amino acids in Yogurt (nonfat, plain), per 100 g, per serving and per gram of protein.
Amino acid
Per 100 g
Per serving
mg per g protein
leucine
0.577 g
0.98 g
101
lysine
0.514 g
0.87 g
90
valine
0.474 g
0.81 g
83
isoleucine
0.313 g
0.53 g
55
threonine
0.235 g
0.4 g
41
phenylalanine
0.313 g
0.53 g
55
methionine
0.169 g
0.29 g
29
histidine
0.142 g
0.24 g
25
tryptophan
0.032 g
0.05 g
6
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.
How much protein is in 100 g of yogurt (nonfat, plain)?
5.73 g. The 1 container serving used on this page weighs 170 g and so carries 9.7 g.
How much protein do you get per 100 calories of yogurt (nonfat, plain)?
10.2 g. That figure divides its 5.73 g of protein per 100 g by its 56 kcal per 100 g, so it does not depend on serving size.
Is the protein in yogurt (nonfat, plain) complete?
Yes. The protein in yogurt (nonfat, plain) 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 yogurt (nonfat, plain)?
About 19%. One 1 container serving has 9.7 g, and the FDA Daily Value for protein is 50 g.
Figures from USDA FoodData Central record #170887 (Yogurt, plain, skim milk), 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.