Calories in Crab

1 crab (40 g) has 33 calories, with 7.2 g of protein, 0.3 g of fat and 0 g of carbohydrates. Per 100 grams, crab has 83 calories.

Most of the calories in crab come from protein (91%). Crab is a good source of protein, with 18 g per 100 g and low in fat. It has more calories per gram than 8% of the 315 fish and seafood in our database.

Crab Calorie Calculator

AmountUnit

33cal

in 1 crab (40 g)

Protein7.2 g91% of calories

Fat0.3 g9% of calories

Carbs0 g0% of calories

2% of a 2,000 calorie day

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Crab calories by serving size

Common amounts of crab with calories and macros. Tap a row for its full nutrition page.

Serving	Weight	Calories	Protein	Fat
1 leg	15 g	12	2.7 g	0.1 g
1 claw	15 g	12	2.7 g	0.1 g
1 oz	28 g	24	5.1 g	0.2 g
2 legs	30 g	25	5.4 g	0.2 g
2 claws	30 g	25	5.4 g	0.2 g
1 crab	40 g	33	7.2 g	0.3 g
50g	50 g	42	8.9 g	0.4 g
1/2 cup	68 g	56	12 g	0.5 g
2 crab	80 g	66	14 g	0.6 g
100g	100 g	83	18 g	0.7 g
4 oz	113 g	94	20 g	0.8 g
1 cup	135 g	112	24 g	1 g
200g	200 g	166	36 g	1.5 g

Crab vs similar foods

Calories per 100 g compared with other fish and seafood.

Raw Blue Crab87

Raw Dungeness Crab86

Raw Alaska King Crab84

Crab83

Canned Crab83

Canned Blue Crab83

Cooked Blue Crab83

Crab: common questions

How many calories are in 1 crab?

1 crab (40 g) has 33 calories.

How many calories are in 100 grams of crab?

100 grams of crab has 83 calories, 18 g of protein, 0.7 g of fat and 0 g of carbohydrates.

How much protein is in crab?

Crab has 18 g of protein per 100 g. 1 crab gives you 7.2 g.

Is crab high in calories?

Crab has 83 calories per 100 g. It has more calories per gram than 8% of the 315 fish and seafood in our database. A 2,000 calorie day fits about 24.1 kg of it.

More about crab

Source: USDA FoodData Central, FNDDS 2021-2023. FDC ID 2706344. Original description: Crab. Portion weights are USDA household measures.