How many units are in a glass of prosecco?
1.4units
That is a 125ml glass at 11% ABV. One UK unit is 10ml of pure alcohol. The weekly guideline of 14 units works out at about 10 of these across a whole week.
Sparkling wine is usually poured into a 125ml flute rather than a 175ml wine glass, so a glass of prosecco is lighter than a glass of white. Six of them still empties the bottle.

Units by size and strength
| Drink | Size | Strength | Units |
|---|---|---|---|
| Flute (125ml) of 11%Most common | 125ml | 11% | 1.4 |
| Flute (150ml) of 11% | 150ml | 11% | 1.6 |
| Coupe (175ml) of 11% | 175ml | 11% | 1.9 |
| Flute (125ml) of 12% | 125ml | 12% | 1.5 |
How this is worked out
units = volume (ml) × ABV (%) ÷ 1000
For a 125ml glass at 11% ABV: 125 × 11 ÷ 1000 = 1.4 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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