Alcohol Unit Calculator
Instantly calculate the exact number of alcohol units in your drinks. Free, accurate tool factoring in volume and ABV to help you track your weekly intake.
Calculate Your Alcohol Units
Select a common drink type or enter custom volume and ABV details below to get an instant, precise unit calculation and comparison to UK health guidelines.
Drink Details
Enter your drink variables for an accurate unit count
Unit Results
Total alcohol units and guideline comparison
Common UK Drink Unit Counts
Typical alcohol unit values for popular drinks to help you estimate your intake without using the calculator.
| Drink Type | Volume | ABV | Units |
|---|---|---|---|
| Single Small Shot of Spirits | 25 ml | 40% | 1.0 |
| Single Large Shot of Spirits | 35 ml | 40% | 1.4 |
| Small Glass of Wine | 125 ml | 12% | 1.5 |
| Large Glass of Wine | 250 ml | 13.5% | 3.4 |
| Standard Pint of Beer/Lager | 568 ml | 4.5% | 2.6 |
| Strong Pint of Craft Beer | 568 ml | 6.5% | 3.7 |
| Standard Bottle of Beer | 330 ml | 5.0% | 1.7 |
| Alcopop / Ready Mixed Drink | 275 ml | 4.5% | 1.2 |
Alcohol Units FAQ
Everything you need to know about calculating alcohol units and understanding UK drinking guidelines.
One unit of alcohol is equivalent to 10 millilitres (or 8 grams) of pure alcohol. This is roughly the amount of alcohol the average adult body can process and remove from the bloodstream in one hour.
The UK Chief Medical Officers’ low-risk drinking guidelines advise that both men and women should not drink more than 14 units of alcohol per week on a regular basis, ideally spread over three or more days.
The formula is: Strength (ABV %) x Volume (ml) ÷ 1,000 = Units. For example, a 568ml pint of 4% ABV beer contains (4 x 568) / 1000 = 2.27 units.
No, a unit is a standard measure of pure alcohol regardless of the drink type. However, different drinks have vastly different volumes and ABVs, which is why a large glass of wine can contain more units than a pint of standard beer.