Alcohol Units Calculator
Count UK alcohol units in a drink and compare your weekly total with the 14-unit guideline.
Your result
Updates as you type. Based on 2025/26 UK figures where relevant.
How this is worked out
Units = volume in ml × ABV% ÷ 1,000. UK Chief Medical Officers advise no more than 14 units a week, spread over three or more days.
Tips
- The NHS uses BMI as a screening tool, but waist measurement also matters.
- Estimates like BMR and body fat can vary by 5–10% from lab measurements.
- Track trends over weeks rather than day-to-day changes.
Guides for this calculator
- How to Calculate Alcohol Units in the UK: Step-by-Step Guide
- Alcohol Units: Common Mistakes, Tips and FAQs
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Frequently asked questions
How does the alcohol Units Calculator work?
Units = volume in ml × ABV% ÷ 1,000. UK Chief Medical Officers advise no more than 14 units a week, spread over three or more days.
Is this medical advice?
No. These tools give general estimates. For medical advice, speak to your GP, pharmacist or NHS 111.
Can I use these for children?
No. Children's BMI and health measures use age- and sex-specific charts. Use the NHS healthy weight calculator for children.
Why use stone and pounds?
Many people in the UK still think in stone and pounds, so we accept those units and show metric too.
This calculator gives an estimate for general information. It isn't financial, tax, legal or medical advice. Check official figures on GOV.UK or NHS.uk, or speak to a qualified adviser.