| Measure | Black beans | Kidney beans |
|---|---|---|
| Typical serving | 1 cup cooked (172 g) | 1 cup cooked (177 g) |
| Protein per serving | 15.2 g | 15.3 g |
| Protein per 100 g | 8.86 g | 8.67 g |
| Calories per serving | 227 kcal | 225 kcal |
| Protein density | 27% of calories | 27% of calories |
| Share of 50 g Daily Value | 30% | 31% |
| Protein quality | Incomplete | Incomplete |
| Category | Legumes & beans | Legumes & beans |
Compare foods · Black beans · Kidney beans
Protein comparison
Black beans vs Kidney beans: which has more protein?
Black beans gives you 15.2 g of protein per 1 cup cooked; kidney beans gives you 15.3 g per 1 cup cooked. On equal weight it is 8.86 g against 8.67 g per 100 g. The full side-by-side, from the same USDA-sourced records as the rest of the site:
The verdict
On equal weight this is close to a tie: black beans has 8.86 g of protein per 100 g and kidney beans has 8.67 g. Per typical serving they are also nearly even: 15.2 g per 1 cup cooked of black beans against 15.3 g per 1 cup cooked of kidney beans.
For the full breakdown of each food, see the protein in black beans and protein in kidney beans pages, each with its USDA FoodData Central record id.
Quick answers
Black beans vs Kidney beans FAQ
Which has more protein, black beans or kidney beans?
Black beans has more protein per 100 g: 8.86 g against 8.67 g. Per typical serving, black beans provides 15.2 g (1 cup cooked) and kidney beans provides 15.3 g (1 cup cooked).
Is black beans or kidney beans more protein-dense?
They are equally protein-dense: about 27% of calories come from protein in both.
Are black beans and kidney beans complete proteins?
No. Neither black beans nor kidney beans is a complete protein on its own; pairing them with other protein sources across the day covers the full range of essential amino acids.
Where they rank
Related rankings
More matchups