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Guinness is an alcoholic stout beer. The figures here cover canned, bottled and draught forms. It provides energy mainly from alcohol and carbohydrate, with little protein and only trace amounts of fat. Per 100ml, it contains 153 kJ of energy, 3.2g of carbohydrate, 0.4g of protein and 3.3g of alcohol.

The carbohydrate listed is all sugars, which is relevant when considering sugar intake. Alcohol contributes to total energy intake even when a drink contains little fat. It also affects judgement and coordination, and drinking alcohol carries health risks. Full nutrient figures are provided in the tables below.

Nutrition per 100ml

Nutrient

Per 100ml

Energy

37 kcal

Energy

153 kJ

Fat

Trace

of which saturates

Trace

Carbohydrate

3.2g

of which sugars

3.2g

Fibre

Trace

Protein

0.4g

Salt

0.02g

Alcohol

3.3g

Water

90g

Cholesterol

0mg

Vitamins and minerals per 100ml

Nutrient

Per 100ml

Vitamin A (retinol equivalent)

Trace

Vitamin D

0µg

Vitamin K1

Trace

Vitamin C

0mg

Thiamin (B1)

Trace

Riboflavin (B2)

0.03mg

Niacin (B3)

0.8mg

Vitamin B6

0.08mg

Vitamin B12

Trace

Folate

6µg

Calcium

4mg

Iron

0.2mg

Magnesium

8mg

Phosphorus

26mg

Potassium

48mg

Sodium

6mg

Zinc

Trace

Copper

Trace

Selenium

Trace

Other types of stout

Food

Calories per 100ml

Protein per 100ml

Fat per 100ml

Fibre per 100ml

Stout, bottled

37 kcal

0.3g

Trace

–

Stout, extra

39 kcal

0.3g

Trace

–

Stout, Mackeson

36 kcal

0.4g

Trace

–

About these figures

Values are per 100ml of the food as described (Approx. 4% ABV. 10 samples including canned, bottled and draft). "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