Alcohol Unit Calculator
Calculate alcohol units from drink volume and ABV percentage. One UK unit equals 10 ml of pure alcohol.
How to Use the Alcohol Unit Calculator
- Enter the total drink volume in millilitres.
- Enter the alcohol-by-volume (ABV) percentage shown on the label.
- Click Calculate to see alcohol units, pure alcohol volume, and estimated calories.
Quick Reference
| From | To |
|---|---|
| Pint of lager (568 ml, 4%) | 2.3 units |
| Glass of wine (175 ml, 12%) | 2.1 units |
| Shot of spirits (25 ml, 40%) | 1.0 unit |
| Bottle of wine (750 ml, 13%) | 9.8 units |
| Can of beer (330 ml, 5%) | 1.7 units |
Use Cases
- •Tracking weekly alcohol intake against health guidelines.
- •Comparing the strength of different drinks.
- •Estimating calorie intake from alcoholic beverages.
Formula
Units = Volume (ml) × ABV (%) / 1000. One UK unit = 10 ml pure alcohol ≈ 56 kcal.
Frequently Asked Questions
What is one alcohol unit?
One UK alcohol unit equals 10 ml (8 g) of pure ethanol — roughly half a pint of 4% beer.
How many units are safe per week?
UK guidelines recommend no more than 14 units per week spread over three or more days.
Is this calculator free?
Yes, all OhMyCalc tools are completely free to use.