Alcohol Units Calculator
Convert a drink's volume and strength into UK alcohol units.
Quick answer: enter your details below and click Calculate Units — your result appears instantly, right here in your browser. Nothing you enter is uploaded or stored.
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How to use
- Enter the drink volume in millilitres.
- Enter the ABV percentage.
- Click Calculate Units.
About this tool
One UK unit is 10 ml of pure alcohol, so the maths is volume times strength divided by 1,000. Enter the drink size in millilitres and its ABV percentage and the tool gives the units at once. Units describe the drink, not how it will affect you, which also depends on food, pace, and body size.
Frequently asked questions
Are US standard drinks the same?
No, a US standard drink holds about 14 g of alcohol, which is a different measure from a UK unit.
Do units predict drunkenness?
Only loosely. Pace, food, body size, and tolerance all change the effect of the same units.