Food database · Legumes & beans
Protein content
16 g of protein in 1 cup (180 g) of canned black beans, or 6.6 g for every 100 kcal it supplies.
Share of this food's calories that come from protein - it is moderately protein-dense.
| Protein per 100 kcal | 6.6 g |
|---|---|
| Protein per 100 g | 8.87 g |
| Protein per serving | 16 g in 1 cup (180 g) |
| Calories from protein | 26% |
| Rank in legumes, per 100 kcal | 20th of 54 |
| Rank of all foods, per 100 g | 477th of 796 |
| Share of 50 g Daily Value | 32% per serving |
| Protein quality | Incomplete protein |
One 1 cup, 16 g protein.
Every 100 kcal of canned black beans brings 6.6 g of protein. On that measure it ranks 20th of the 54 legumes in this database and 371st of all 796 foods on the site. Measured by weight instead, its 8.87 g per 100 g ranks 21st in its group.
Around 26% of the calories in canned black beans come from protein, so it is moderately protein-dense. It contributes to a day's protein total, but the bulk of what it delivers is energy rather than amino acids - treat it as a contributor alongside a denser source, not as the protein in a meal.
USDA lists 0.43 g of fat per 100 g of canned black beans, too little for a protein-to-fat ratio to mean much.
Set against canned lentils, another legume entry in the database, a serving carries about 0.5 g more protein (canned lentils has 15.5 g per 1 cup).
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 measured by volume at 180 g, and it covers about 32% of the 50 g FDA Daily Value for protein.
Serving sizes
| Portion | Weight | Protein | Calories |
|---|---|---|---|
| 100 g | 100 g | 8.87 g | 134 kcal |
| 1 cup (serving used here) | 180 g | 16 g | 241 kcal |
The USDA record lists no other household measure for this food; protein and calories scale from the per-100 g figures.
Related
Highest-protein legumes per serving · Most protein-dense foods · Highest protein per 100 g
Quick answers
8.87 g. The 1 cup serving used on this page weighs 180 g and so carries 16 g.
6.6 g. That figure divides its 8.87 g of protein per 100 g by its 134 kcal per 100 g, so it does not depend on serving size.
No. On its own, the protein in canned black beans is short of at least one essential amino acid; other protein sources across the day fill the gap.
About 32%. One 1 cup serving has 16 g, and the FDA Daily Value for protein is 50 g.
Figures from USDA FoodData Central record #2707363 (Black beans, from canned, no added fat), FNDDS survey 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.