Every 100 kcal of croissant brings 2 g of protein. On that measure it ranks 96th of the 111 grains in this database and 692nd of all 796 foods on the site. Measured by weight instead, its 8.2 g per 100 g ranks 63rd in its group.
Only about 8% of the calories in croissant come from protein, so it is more of an energy food than a protein food. It is worth eating for other reasons; the protein it adds to a day is incidental.
By weight, fat outweighs protein in croissant: 21 g of fat per 100 g against 8.2 g of protein, a ratio of 0.4 to 1.
Set against brown rice, another grain entry in the database, a serving carries about 0.6 g less protein (brown rice has 5.3 g per 1 cup cooked).
It is an incomplete protein on its own; pairing it with other plant foods across the day covers the full range of essential amino acids. The serving quoted here is counted by piece at 57 g, and it covers about 9% of the 50 g FDA Daily Value for protein.
Serving sizes
Protein in common portions of croissant
Protein and calories in Croissant for 100 g, the site serving and USDA household portions.
Portion
Weight
Protein
Calories
100 g
100 g
8.2 g
406 kcal
1 medium croissant (serving used here)
57 g
4.7 g
231 kcal
1 oz
28.4 g
2.3 g
115 kcal
1 croissant, small
42 g
3.4 g
171 kcal
1 croissant, large
67 g
5.5 g
272 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 croissant
The nine essential amino acids in Croissant, per 100 g, per serving and per gram of protein.
Amino acid
Per 100 g
Per serving
mg per g protein
leucine
0.623 g
0.36 g
76
lysine
0.329 g
0.19 g
40
valine
0.41 g
0.23 g
50
isoleucine
0.365 g
0.21 g
45
threonine
0.284 g
0.16 g
35
phenylalanine
0.416 g
0.24 g
51
methionine
0.175 g
0.1 g
21
histidine
0.187 g
0.11 g
23
tryptophan
0.099 g
0.06 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.
8.2 g. The 1 medium croissant serving used on this page weighs 57 g and so carries 4.7 g.
How much protein do you get per 100 calories of croissant?
2 g. That figure divides its 8.2 g of protein per 100 g by its 406 kcal per 100 g, so it does not depend on serving size.
Is the protein in croissant complete?
No. On its own, the protein in croissant is short of at least one essential amino acid; other protein sources across the day fill the gap.
What share of the protein Daily Value is one serving of croissant?
About 9%. One 1 medium croissant serving has 4.7 g, and the FDA Daily Value for protein is 50 g.
Figures from USDA FoodData Central record #174987 (Croissants, butter), 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.