How many calories are in Crustaceans, Crab?

A 100 g serving of Crustaceans, Crab has 81 kcal. The calories in your portion depend on its weight and how it is prepared.

How much protein is in Crustaceans, Crab?

Per 100 g there are 18.7 g of protein — about 37% of the Daily Value (50 g).

How much fat and carbs are in Crustaceans, Crab?

Per 100 g there are 0.8 g of fat and 0 g of carbohydrate.

What nutrients is Crustaceans, Crab high in?

Per 100 g it notably contributes to your Daily Value for: Protein (37% DV), Magnesium (10% DV).

Fish & Seafood

Crustaceans, Crab

USDA reference values for crustaceans, crab (per 100 g).

81kcalCalories

18.7gProtein

0.8gFat

0gCarbs

Protein, fat and carb balance

Share of calories from each macronutrient (per 100 g).

Protein 91.1%
Fat 8.9%
Carbs 0%

What this food is high in

37% Protein 18.7 g / 100 g 10% Magnesium 43.1 mg / 100 g

Shown as percent of the Daily Value per 100 g.

Full nutrition facts (per 100 g)

Nutrient	Per 100 g	% DV*
Macronutrients
Protein	18.7 g	37%
Total Fat	0.8 g	1%
Saturated Fat	—
Carbohydrate	0 g	0%
Dietary Fiber	—
Total Sugars	—
Minerals
Sodium	331.3 mg	14%
Potassium	234.8 mg	5%
Calcium	110.9 mg	9%
Iron	0.6 mg	4%
Magnesium	43.1 mg	10%
Vitamins
Vitamin C	—
Vitamin A	—
Vitamin D	—
Other
Cholesterol	113.5 mg	38%

* Percent of the Daily Value (Daily Value, based on a 2,000 kcal diet).

Data source: USDA FoodData Central. Values are per 100 g of edible portion and are reference figures — they vary by variety, preparation and brand. Last updated: 2026-04-30.

Frequently asked questions

How many calories are in Crustaceans, Crab?: A 100 g serving of Crustaceans, Crab has 81 kcal. The calories in your portion depend on its weight and how it is prepared.
How much protein is in Crustaceans, Crab?: Per 100 g there are 18.7 g of protein — about 37% of the Daily Value (50 g).
How much fat and carbs are in Crustaceans, Crab?: Per 100 g there are 0.8 g of fat and 0 g of carbohydrate.
What nutrients is Crustaceans, Crab high in?: Per 100 g it notably contributes to your Daily Value for: Protein (37% DV), Magnesium (10% DV).

Similar foods and comparisons

Alaska Pollock, Raw 78 kcal 17.3 g protein Anchovies, Canned In Olive Oil 206 kcal 26.9 g protein Cod, Pacific Or Alaskan 61 kcal 14.2 g protein Crustaceans, Crab 83 kcal 17.9 g protein Crustaceans, Crab 155 kcal 20.2 g protein Crustaceans, Crab 86 kcal 17.4 g protein

Compare Crustaceans, Crab with: Alaska Pollock, Raw Anchovies, Canned In Olive Oil Cod, Pacific Or Alaskan Crustaceans, Crab

Note. This information is provided for general reference only and is not medical advice or a diet prescription. If you have a medical condition or special dietary needs, consult a physician or a registered dietitian.