How many units are in a glass of champagne?
1.5units
That is a 125ml flute at 12% ABV. One UK unit is 10ml of pure alcohol. The weekly guideline of 14 units works out at about 9 of these across a whole week.
A champagne flute is normally 125ml, giving six glasses from a bottle. At a wedding or a party the glass is usually topped up rather than emptied, which makes counting harder than it looks.

Units by size and strength
| Drink | Size | Strength | Units |
|---|---|---|---|
| Flute (125ml) of 12%Most common | 125ml | 12% | 1.5 |
| Flute (150ml) of 12% | 150ml | 12% | 1.8 |
| Coupe (175ml) of 12% | 175ml | 12% | 2.1 |
| Flute (125ml) of 12.5% | 125ml | 12.5% | 1.6 |
How this is worked out
units = volume (ml) × ABV (%) ÷ 1000
For a 125ml flute at 12% ABV: 125 × 12 ÷ 1000 = 1.5 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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