Every 100 kcal of hard-boiled egg brings 8.1 g of protein. On that measure it ranks 8th of the 20 eggs in this database and 298th of all 796 foods on the site. Measured by weight instead, its 12.6 g per 100 g ranks 10th in its group.
Protein accounts for roughly 33% of the calories in hard-boiled egg, making it moderately 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, hard-boiled egg has 1.2 g of protein for each gram of fat (12.6 g against 10.6 g per 100 g).
Set against egg, another egg entry in the database, a serving carries about 0.1 g more protein (egg has 6.2 g per 1 large).
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 50 g, and it covers about 13% of the 50 g FDA Daily Value for protein.
Boiling does not change protein content, only digestibility, which improves with cooking.
Serving sizes
Protein in common portions of hard-boiled egg
Protein and calories in Hard-boiled egg for 100 g, the site serving and USDA household portions.
Portion
Weight
Protein
Calories
100 g
100 g
12.6 g
155 kcal
1 large (serving used here)
50 g
6.3 g
78 kcal
1 cup, chopped
136 g
17.1 g
211 kcal
1 tbsp
8.5 g
1.1 g
13 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 hard-boiled egg
The nine essential amino acids in Hard-boiled egg, per 100 g, per serving and per gram of protein.
Amino acid
Per 100 g
Per serving
mg per g protein
leucine
1.08 g
0.54 g
86
lysine
0.904 g
0.45 g
72
valine
0.767 g
0.38 g
61
isoleucine
0.686 g
0.34 g
54
threonine
0.604 g
0.3 g
48
phenylalanine
0.668 g
0.33 g
53
methionine
0.392 g
0.2 g
31
histidine
0.298 g
0.15 g
24
tryptophan
0.153 g
0.08 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.
12.6 g. The 1 large serving used on this page weighs 50 g and so carries 6.3 g.
How much protein do you get per 100 calories of hard-boiled egg?
8.1 g. That figure divides its 12.6 g of protein per 100 g by its 155 kcal per 100 g, so it does not depend on serving size.
Is the protein in hard-boiled egg complete?
Yes. The protein in hard-boiled egg 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 hard-boiled egg?
About 13%. One 1 large serving has 6.3 g, and the FDA Daily Value for protein is 50 g.
Figures from USDA FoodData Central record #173424 (Egg, whole, cooked, hard-boiled), 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.