Alcohol Units Calculator
Standard drinks from volume and ABV.
Inputs
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Formula
units = (volume × ABV) ÷ 1000
One UK-style unit is 10 mL of pure ethanol. Formula: (mL × ABV%) / 1000.
Worked example
A 330 mL beer at 5% ABV is 1.65 standard drinks.
Where this can give the wrong answer
- Regional unit definitions differ (US standard drink = 14 g ethanol).
- Mixed drinks need total volume and effective ABV.
- Not medical advice for safe limits.
FAQ
- Approximate 8 g per UK unit — varies by jurisdiction.