How much protein and fiber are in one cup of black beans?

Black beans, 1 cup (172 g), contain about 15.2 g of protein, 15 g of fiber and 227 kcal, according to USDA FoodData Central.

At a glance

Protein
15.2 g
Fiber
15 g
Calories
227 kcal
Protein per 100 kcal
6.7 g

Portions from USDA FoodData Central

USDA FoodData Central values for Black beans. Chosen serving: 1 cup (172 g).
Portion Grams Calories Protein Fiber Carbohydrate Fat
Chosen serving: 1 cup 172 g 227 kcal 15.2 g 15 g 40.8 g 0.9 g
Per 100 g 100 g 132 kcal 8.9 g 8.7 g 23.7 g 0.5 g

A familiar serving, made clear

One cup of cooked black beans counts toward both protein and fiber, which helps when a meal is built around beans.

Where these numbers come from

USDA description: Beans, black, mature seeds, cooked, boiled, without salt. FDC ID: 173735. Dataset: USDA FoodData Central, SR Legacy, April 2018 release, published 2019-04-01. Food record published 4/1/2019; dataset retrieved 20 September 2026.

Use these values to orient your meal, then make the journal match what was on your plate.

Related references

Foods

Lentils Chickpeas Sweet potato

Comparisons

Lentils or black beans: which have more protein and fiber?

Read the protein evidence and its limits.

Written by
Dr. Loredana Gavrilovici, Founder of Food & Fit
Published

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