Calcvers
Alcohol Units Calculator
Drinks
Generated
September 24, 2026
Total alcohol units
3.8units
≈ 2.1 US standard drinks
Your inputs
- Volume per drink
- 250 ml
- Beverage
- Beer
- ABV
- 5 %
- Drinks
- 3 drinks
Breakdown
- Per drink
- 1.3 units
- Pure alcohol
- 30 g
- Calories
- ≈ 105 kcal
Your evening
| Item | Value |
|---|---|
| Units | 3.8 units |
| Standard drinks | 2.1 drinks |
What this means
One UK alcohol unit is 10 ml (8 g) of pure alcohol, and one unit equals a 250 ml beer at 4% ABV — roughly half a pint at typical strength. Units are computed as volume (ml) × ABV (%) ÷ 1000. A US standard drink contains about 14 g of pure alcohol, so UK units convert at roughly 1.77 units per standard drink. Calories come from the alcohol itself plus any sugar.
Recommendations
- Compare your total against the low-risk weekly guideline of no more than 14 units (UK) or 14 drinks (US).
- Note that units, not 'number of drinks', is what counts — a strong craft beer can be 3 units.
- On nights out, alternating alcohol with water reduces total units and calories.
Watch out
- This estimates alcohol content, not its effects — tolerance varies with weight, food and pace.
- Drinking guidelines vary by country and are minimum-risk, not zero-risk.