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Alcohol Units Tracker

Log your weekly beer, wine and spirits intake to see your total alcohol units, risk level against UK guidelines, and estimated alcohol calories.

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Alcohol Units Tracker
Calculate weekly alcohol units and compare against safe drinking limits
Enter your weekly drinks to calculate units

Medical disclaimer. This calculator is provided for educational and informational purposes only and does not constitute medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional regarding your health, diet, exercise, or medication decisions. Read full disclaimer →

About Alcohol Units Calculator

Alcohol units standardise measurement of alcohol intake. One UK unit = 10mL (8g) of pure alcohol. Formula: Units = (Volume mL x ABV%) / 1000. Common drinks: Pint of 4% beer = 2.3 units; 175mL glass of 13% wine = 2.3 units; 25mL shot of 40% spirits = 1 unit; 330mL can of 5% beer = 1.7 units.

UK Chief Medical Officers low-risk guideline: no more than 14 units per week, spread over 3+ days, with at least 2 alcohol-free days per week. Above 14 units weekly increases risk of liver disease, cancers (mouth, throat, breast, bowel), and cardiovascular disease. Alcohol is metabolised at approximately 1 unit per hour regardless of food, coffee, or exercise. Blood Alcohol Content (BAC) peaks 30-90 minutes after drinking. The calculator also estimates time to zero BAC using the Widmark formula adjusted for body weight and sex.

Frequently Asked Questions

One UK alcohol unit equals 10mL (8g) of pure alcohol, calculated as (volume in mL x ABV%) / 1000. As a reference: a pint of 4% beer is about 2.3 units, a 175mL glass of 13% wine is about 2.3 units, and a 25mL shot of 40% spirits is 1 unit.
The UK Chief Medical Officers' low-risk guideline recommends no more than 14 units per week, spread over 3 or more days, with at least 2 alcohol-free days each week. This calculator compares your entered weekly total against that 14-unit benchmark and flags low, moderate, or high risk.
Regularly exceeding 14 units per week is associated with increased risk of liver disease, several cancers (including mouth, throat, breast, and bowel cancer), and cardiovascular disease. The risk increases the more consistently the guideline is exceeded.
The liver metabolises alcohol at roughly 1 unit per hour, regardless of food, coffee, or exercise - none of these speed up elimination. Blood alcohol content typically peaks 30-90 minutes after drinking, which is why pacing drinks and including alcohol-free days both matter for staying within low-risk limits.
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