Alcohol Units Calculator: UK Units, Grams and Standard Drinks
Pick a drink (or enter its size and strength) and how many you had to see the units, grams of alcohol and standard drinks.
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UK alcohol units
6.5units
Within 14 units a week- Per drink
- 3.25 units
- Pure alcohol
- 51 g
- Standard drinks (10 g)
- 5.1
- Calories from alcohol
- 359 Calories from alcohol
For general information, not medical advice. No amount of alcohol is risk-free; do not drink and drive.
India has no official standard drink; 10 g (WHO) ≈ one 30 ml peg of 42.8% spirit.
Show working
- 650 ml × 5% ÷ 1000 = 3.25
- × 2 = 6.5
How to use
- Choose a drink, or Custom to enter the volume (ml) and strength (% ABV).
- Enter how many drinks and whether it is one session or a whole week.
- Read the units, grams of alcohol, standard drinks and calories.
Good to know
UK units = volume in ml × ABV % ÷ 1,000. One unit is 10 ml (8 g) of pure alcohol. A 650 ml bottle of strong beer at 8% is 5.2 units; a 30 ml peg of whisky at 42.8% is about 1.3 units.
India has no official standard-drink size. The WHO uses about 10 g of pure alcohol as a standard drink, which is roughly one 30 ml "small" peg of 42.8% spirit. Grams = ml × ABV ÷ 100 × 0.789. Alcohol also has about 7 kcal per gram.
The UK Chief Medical Officers advise no more than 14 units a week, spread over 3 or more days, with some alcohol-free days. There is no completely safe level: WHO notes risk rises with every drink. Do not drink in pregnancy, before driving, or with medicines that interact. For help, call the Tele-MANAS helpline 14416.
Questions
How many units are in a bottle of beer?
A 650 ml bottle at 5% has 3.25 units; strong beer at 8% has 5.2 units.
How many units is a peg of whisky?
A 30 ml small peg of 42.8% whisky is about 1.3 units (10 g alcohol); a 60 ml large peg is about 2.6 units.
What is a standard drink in India?
There is no official Indian definition. Many doctors use the WHO figure of 10 g of pure alcohol, about one 30 ml peg of spirits.
How long does one unit take to leave the body?
Roughly an hour for an average adult, but it varies a lot. Never drive after drinking; India's legal limit is 30 mg per 100 ml of blood.
Is my data saved?
No. Everything is calculated on your device.