Alcohol Unit Calculator

Your details

Different countries define "one unit" differently. The UK standard is 8 g of pure ethanol; Austria uses 20 g. Select your country to see units in local terms.
Select a common drink to prefill ABV and volume, then adjust if needed.
The alcohol percentage shown on the bottle or can label. A standard lager is about 4-5%, wine is 11-14%, and spirits are 37-40%.
%
The total volume of the drink in millilitres. A pint is 568 ml, a standard wine glass is 175 ml, and a spirit shot is 25 ml.
ml
How many of this drink did you or will you have? Outputs scale proportionally.
Used to estimate your weekly unit total and compare it against low-risk guidelines. Enter 0 to skip the weekly projection.
Alcohol units (this session)Low risk
2.52

Total units for all drinks entered, in the selected country standard

Pure ethanol20.2g
Calories from alcohol141kcal
Projected weekly units2.5
% of weekly low-risk limit18%
Approx. time for body to process2.5hrs
20.2 g
Low<16Moderate16-48High48-80Very high80+

This session is 2.52 units - low risk.

  • This drink contains 20.2 g of pure ethanol (1 unit = 8 g in your country).
  • The alcohol alone contributes roughly 141 kcal - about the same as 0.5 slices of pizza.
  • A typical adult liver processes about 1 UK unit (8 g ethanol) per hour, so allow roughly 2.5 hours to clear this alcohol.
  • Your projected weekly total is 2.5 units, which is 18% of the 14-unit (112 g) low-risk guideline.

Next stepStaying within the low-risk limit and having 2-3 alcohol-free days a week supports long-term health.

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