Alcohol Unit Calculator
Calculate UK alcohol units, US standard drinks and grams of alcohol with this free online alcohol unit calculator, and compare to the weekly guideline.
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How to use Alcohol Unit Calculator
- 1Choose millilitres or US fluid ounces
- 2Add drinks with the presets or enter the volume, ABV and number of each drink
- 3Read the total UK units, US standard drinks and grams of alcohol compared with the 14-unit weekly guideline
Frequently asked questions
How do you calculate alcohol units?▾
Multiply the volume in ml by the ABV percentage and divide by 1,000. A 568 ml pint of 4.5% beer contains 568 × 4.5 ÷ 1000 = 2.6 units.
How many units are in a glass of wine?▾
A 175 ml glass of 12% wine contains 2.1 units, and a large 250 ml glass of 13% wine contains about 3.3 units.
What is the difference between a UK unit and a US standard drink?▾
A UK unit is 10 ml or 8 g of pure alcohol, while a US standard drink contains 14 g, so one US drink is about 1.75 UK units.
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