How Much Does a Raw Blue Crab Weigh?

A raw blue crab weighs about 21 grams (0.7 oz).

That is the USDA average for one raw blue crab, which has 18 calories and 3.8 g of protein. Sizes vary, so weigh yours if you track closely.

Raw Blue Crab Calorie Calculator

AmountUnit

18cal

in 1 raw blue crab (21 g)

Protein3.8 g88% of calories

Fat0.2 g12% of calories

Carbs0 g0% of calories

1% of a 2,000 calorie day

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Raw Blue Crab weight by size and measure

Measure	Grams	Ounces	Calories
1 raw blue crab	21 g	0.7 oz	18

Raw Blue Crab calories by serving size

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

Serving	Weight	Calories	Protein	Fat	Carbs
1 raw blue crab	21 g	18	3.8 g	0.2 g	0 g
1 oz	28 g	25	5.1 g	0.3 g	0 g
2 raw blue crab	42 g	37	7.6 g	0.5 g	0 g
50g	50 g	44	9 g	0.5 g	0 g
100g	100 g	87	18 g	1.1 g	0 g
4 oz	113 g	99	20 g	1.2 g	0 g
200g	200 g	174	36 g	2.2 g	0.1 g

Raw Blue Crab vs similar foods

Calories per 100 g compared with other fish and seafood.

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Raw Blue Crab: common questions