How many units are in a pint of Guinness?
2.3units
That is a pint of Guinness Draught at 4.1% ABV. One UK unit is 10ml of pure alcohol. The weekly guideline of 14 units works out at about 6 of these across a whole week.
Guinness Draught is 4.1% ABV in the UK and Ireland, which makes a pint slightly stronger than a standard 4% beer and rather weaker than most lagers on the same bar.
Units by size and strength
| Drink | Size | Strength | Units |
|---|---|---|---|
| Pint of Guinness Draught (4.1%)Most common | 568ml | 4.1% | 2.3 |
| Half pint of Guinness Draught | 284ml | 4.1% | 1.2 |
| Can of Guinness Draught (440ml) | 440ml | 4.1% | 1.8 |
| Bottle of Guinness Original (4.2%) | 500ml | 4.2% | 2.1 |
| Pint of Guinness Foreign Extra (7.5%) | 568ml | 7.5% | 4.3 |
Guinness 0.0 contains no alcohol and no units. It still contains calories.
How this is worked out
units = volume (ml) × ABV (%) ÷ 1000
For a pint of Guinness Draught at 4.1% ABV: 568 × 4.1 ÷ 1000 = 2.3 units.
Try the unit calculatorThe weekly guideline
The UK Chief Medical Officers advise no more than 14units a week for men and women alike, spread over three days or more, with several drink-free days. Drinking a week's worth in one session carries its own risks, separate from the weekly total.
If you drink heavily every day, stopping suddenly can be dangerous. Speak to your GP before cutting down sharply.
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