Alcohol Units Formula:
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Alcohol units are a standard way to quantify the actual amount of pure alcohol in a drink. One unit equals 10ml or 8g of pure alcohol, which is roughly what an average adult can process in one hour.
The calculator uses the standard alcohol unit formula:
Where:
Explanation: The formula multiplies the drink volume by its alcohol percentage, then divides by 1000 to convert to standard units.
Details: Tracking alcohol units helps people stay within recommended limits for safer drinking and better health outcomes.
Tips: Enter the drink volume in milliliters and the ABV percentage (found on drink labels). Both values must be positive numbers.
Q1: What are the recommended weekly alcohol limits?
A: Typically 14 units per week for both men and women, spread over 3+ days with alcohol-free days.
Q2: How many units are in common drinks?
A: A pint (568ml) of 5% beer = 2.8 units; 175ml glass of 12% wine = 2.1 units; 25ml shot of 40% spirit = 1 unit.
Q3: Why calculate units instead of counting drinks?
A: Drink sizes and strengths vary widely. Units provide a consistent measurement of actual alcohol consumed.
Q4: How long does alcohol stay in your system?
A: The liver processes about 1 unit per hour. Many factors affect this rate including weight, gender and food intake.
Q5: Are there health risks from regular drinking?
A: Regular consumption above recommended limits increases risks for liver disease, cancer, heart problems and mental health issues.