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Mussels are shellfish, and these figures describe raw mussels purchased alive. They mainly provide protein, with smaller amounts of fat and carbohydrate, alongside vitamins and minerals. Per 100g, they contain 12g of protein, 1.8g of fat, 19µg of vitamin B12 and 0.73g of salt.

Protein supports the growth and repair of body tissues, while vitamin B12 is needed for normal nerve function and the formation of red blood cells. The salt content is worth noting for people monitoring their salt intake, particularly if salt or salty ingredients are added during preparation. These values describe the raw food; cooking and added ingredients can change its nutritional composition. Full nutrient figures are in the tables below.

Nutrition per 100g

Nutrient

Per 100g

Energy

74 kcal

Energy

312 kJ

Fat

1.8g

of which saturates

0.4g

Carbohydrate

2.5g

of which sugars

Trace

Fibre

0g

Protein

12g

Salt

0.73g

Alcohol

0g

Water

81g

Cholesterol

41mg

Vitamins and minerals per 100g

Nutrient

Per 100g

Vitamin D

Trace

Vitamin E

0.74mg

Vitamin C

Trace

Thiamin (B1)

0.02mg

Riboflavin (B2)

0.35mg

Niacin (B3)

1.6mg

Vitamin B6

0.08mg

Vitamin B12

19µg

Folate

37µg

Calcium

38mg

Iron

2.5mg

Magnesium

23mg

Phosphorus

240mg

Potassium

90mg

Sodium

290mg

Zinc

2.5mg

Copper

0.22mg

Selenium

51µg

Iodine

140µg

Other types of mussels

Food

Calories per 100g

Protein per 100g

Fat per 100g

Fibre per 100g

Mussels, purchased cooked

104 kcal

18g

2.2g

0g

Mussels, canned and bottled, drained

98 kcal

17g

2.1g

–

About these figures

Values are per 100g of the food as described (Purchased alive). "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