Foods / Freshwater fish

Crab: Nutrition and who it suits

Crab is a good choice for weight loss, PCOS, diabetes and menopause. 100 g has 78 kcal and 13.2 g of protein. One serving is one small portion (100 g), about 78 kcal.

Crab

Numbers worked out by Poshan Labs from IFCT 2017 (ICMR-NIN), using the rules on How the ratings work. Last updated 26 October 2026.

Nutrition per 100 g

NutrientPer 100 g
Energy78 kcal
Protein13.2 g
Carbohydrate0 g
Fibre0 g
Sugars0 g
Fat0.9 g
Calcium199 mg
Zinc2.5 mg
Magnesium66.8 mg

Where its calories come from

87%13%
  • Protein 87%
  • Carbohydrate 0%
  • Fat 13%

Worked out from the protein, carbohydrate and fat above, at 4, 4 and 9 kcal a gram.

How many calories in one serving of crab?

About 78 kcal for one small portion (100 g), and about 156 kcal if you have two.

One serving, against your day

How much of an adult woman's daily need one serving (100 g) fills.

29%Protein
13.2 g
20%Calcium
199 mg
19%Zinc
2.5 mg
18%Magnesium
66.8 mg
9%Potassium
286 mg
4%Iron
1.1 mg

Source

Source: Indian Food Composition Tables 2017, National Institute of Nutrition (ICMR), food code S007. Daily need is from ICMR-NIN Nutrient Requirements for Indians 2020, adult woman, moderate activity.

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Is crab good for weight loss, PCOS, diabetes and menopause?

Weight loss

Good choice

16.9 g of protein per 100 kcal helps you stay full and keep muscle.

PCOS and PCOD

Good choice

Almost no carbohydrate in a 100 g serving.

Diabetes

Good choice

Almost no carbohydrate in a 100 g serving.

Menopause

Good choice

199 mg of calcium in a 100 g serving, which your bones need more of now.

Weight lossGood choice16.9 g of protein per 100 kcal helps you stay full and keep muscle.
PCOS and diabetesGood choiceAlmost no carbohydrate in a 100 g serving.
MenopauseGood choice199 mg of calcium in a 100 g serving, which your bones need more of now.

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