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Whelks, boiled, weighed with shells

Whelks are edible marine shellfish. The figures here describe boiled whelks weighed with their shells, rather than the edible flesh alone. They provide protein alongside vitamins and minerals, including vitamin B12, zinc and copper. Per 100g weighed with shells, they contain 6.6g of protein, 7µg of vitamin B12, 4.1mg of zinc and 0.4g of fat.

Protein contributes to the maintenance and repair of body tissues. Vitamin B12 supports normal nerve function and the formation of red blood cells, while zinc supports normal immune function. The shell weight is included in the weight used for these calculations, so these values are not directly comparable with figures for shellfish weighed without shells. Full nutrient figures are in the tables below.

Nutrition per 100g

Nutrient

Per 100g

Energy

30 kcal

Energy

128 kJ

Fat

0.4g

of which saturates

0.1g

Carbohydrate

Trace

of which sugars

Trace

Protein

6.6g

Salt

0.24g

Alcohol

0g

Water

25g

Cholesterol

43mg

Vitamins and minerals per 100g

Nutrient

Per 100g

Vitamin D

Trace

Vitamin E

0.27mg

Vitamin C

Trace

Thiamin (B1)

0.01mg

Riboflavin (B2)

0.06mg

Niacin (B3)

0.4mg

Vitamin B6

0.03mg

Vitamin B12

7µg

Folate

2µg

Calcium

29mg

Iron

1.1mg

Magnesium

30mg

Phosphorus

48mg

Potassium

65mg

Sodium

95mg

Zinc

4.1mg

Copper

2.2mg

Other types of whelks

Food

Calories per 100g

Protein per 100g

Fat per 100g

Fibre per 100g

Whelks, boiled

89 kcal

20g

1.2g

–

About these figures

Values are per 100g of the food as described (Calculated from boiled 16-268). "Trace" means only a very small amount was found. Nutrients that were not measured are not shown. Salt is calculated from sodium.

Further reading and references

  • Public Health England. McCance and Widdowson's The Composition of Foods Integrated Dataset 2021. GOV.UK.

Article history

The information on this page is written and peer reviewed by qualified clinicians.
  • 4 Nov 2026 | Latest version
  • 3 Nov 2026 | Originally published