Quick answer: alcohol units = volume (ml) × ABV (%) ÷ 1,000. Use our free Alcohol Units Calculator to track units across beer, wine, and spirits instantly.
The Formula
One unit equals 10ml (or 8g) of pure alcohol. A pint of 4% beer (568ml) contains about 2.3 units. A 175ml glass of 12% wine contains about 2.1 units. A single 25ml shot of 40% spirit contains 1 unit.
UK NHS Guidelines
The NHS recommends no more than 14 units per week for both men and women, spread across three or more days, with several alcohol-free days each week.
Frequently Asked Questions
How many units are in a bottle of wine?
A standard 750ml bottle at 13% ABV contains about 9.75 units.
Is this the same as blood alcohol content?
No — units measure total alcohol consumed, not your current blood alcohol level, which depends on body weight, time, and metabolism.
Does this account for different drink strengths?
Yes, enter the actual ABV% of your specific drink for an accurate unit count.
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