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Lobster is a type of shellfish. The figures here describe lobster boiled in fresh water. It mainly provides protein, with 22g per 100g, and contains 1.6g of fat. It also provides minerals, including 100µg of iodine per 100g. Its salt content is 0.83g per 100g, despite being boiled without added salt.

Protein supports the growth and repair of body tissues. Iodine is needed to make thyroid hormones, which help regulate the body's metabolism. The salt content is worth noting for people monitoring their salt intake. Added butter or sauces can change the fat, salt and energy content of a meal. Full nutrient figures are in the tables below.

Nutrition per 100g

Nutrient

Per 100g

Energy

103 kcal

Energy

435 kJ

Fat

1.6g

of which saturates

0.2g

Carbohydrate

Trace

of which sugars

Trace

Protein

22g

Salt

0.83g

Alcohol

0g

Water

74g

Cholesterol

110mg

Vitamins and minerals per 100g

Nutrient

Per 100g

Vitamin A (retinol equivalent)

Trace

Vitamin D

Trace

Vitamin E

1.5mg

Vitamin C

Trace

Thiamin (B1)

0.08mg

Riboflavin (B2)

0.05mg

Niacin (B3)

1.5mg

Vitamin B6

0.08mg

Vitamin B12

3µg

Folate

9µg

Calcium

62mg

Iron

0.8mg

Magnesium

34mg

Phosphorus

260mg

Potassium

260mg

Sodium

330mg

Zinc

2.5mg

Copper

1.4mg

Selenium

54µg

Iodine

100µg

Other types of lobster

Food

Calories per 100g

Protein per 100g

Fat per 100g

Fibre per 100g

Lobster, boiled, weighed with shell

37 kcal

8g

0.6g

–

About these figures

Values are per 100g of the food as described (Boiled in fresh water). "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