🍷 Alcohol Units Calculator

Units in any drink — and how your week compares to the NHS 14-unit guideline

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Lager ~4–5% · Wine ~12–14% · Spirits ~40%

Your Units

Units Per Drink—
Weekly Total—
vs NHS Guideline (14 units)—
Approx Calories Per Week—
The NHS advises no more than 14 units per week for both men and women, spread over 3 or more days, with several drink-free days.

What is a Unit?

One UK unit = 10ml (8g) of pure alcohol. Units = volume (ml) × ABV% ÷ 1000. A pint of 5% lager is 2.8 units; a 175ml glass of 13% wine is 2.3 units; a 25ml single of 40% spirit is 1 unit.

The 14-Unit Guideline

UK Chief Medical Officers advise both men and women drink no more than 14 units per week — roughly 6 pints of average-strength beer or 6 standard glasses of wine — ideally spread over 3+ days with alcohol-free days.

Alcohol and Calories

Alcohol contains 7 kcal per gram — nearly as calorific as fat. A pint of lager is ~180–220 kcal; a large glass of wine ~230 kcal. Five pints a week adds roughly 1,000 kcal — equivalent to an extra day's lunch.

If you're concerned about your drinking, free confidential support is available from Drinkaware or your GP.