What constitutes one standard drink

People visiting a licensed venue to share a few drinks is generally a positive experience for both the venue, and customers. However excessive drinking can negatively impact someone’s health and behaviour putting themselves, other customers, and your venue at risk.

These guidelines help lower the risk of alcohol-related harm to help ensure a continued positive experience.

Standard drink and alcohol guidelines

A standard drink

A standard drink contains 10 grams of alcohol regardless of the size of the container (glass, bottle, can) or type of alcohol (beer, wine, spirit).375ml can or bottle full-strength beer = 1.4 standard drinks150ml wine = 1.4 standard drinks

30 ml spirits = 1 standard drink.

Daily drinking guidelines

For most healthy adults:

  • More than four standard drinks on a single occasion increases risks of alcohol-related injury
  • Limiting intake to two standard drinks a day may reduce the risk of alcohol-related disease or harm over a lifetime.

Preventing intoxication

Licensees have important legal and social obligations to ensure alcohol is served responsibly to help minimise alcohol-related harm.

Supporting responsible alcohol consumption and preventing intoxication lowers the risk of incidences and helps to promote a safe venue for customers, staff and the surrounding neighbourhood.

The NSW liquor laws state that you cannot sell and supply alcohol to intoxicated persons.

As a licensee, you must ensure to:

  • serve alcohol responsibly to help minimise alcohol-related harm
  • prevent intoxication from occurring on their premises
  • provide a safe venue for patrons and staff.

Or else you can face:

  • fines
  • higher licence fees
  • suspension or cancellation of a licence.

More information

What constitutes one standard drink

Different types of alcoholic drinks contain different amounts of pure alcohol. If you’re somebody who chooses to drink alcohol, this can make it tricky to keep track of how much you’re actually drinking.

In fact, one serving is usually more than one 'standard drink'.

For example, a 375ml stubby of full-strength beer is usually around 1.4 standard drinks.

An Australian standard drink contains 10g of alcohol (12.5ml of pure alcohol).

It’s handy info to know, because Aussie health experts recommend no more than 4 standard drinks a day and no more than 10 standard drinks in any given week.1

Why? Because each extra drink can increase the risk of injury and accidents and impact on long-term health. This is not to say drinking alcohol will inevitably cause these kind of issues for every person – but it does increase the risk.1

So, if you’re somebody who drinks and would like to keep an eye on your drinking, keeping track of the number of standard drinks in your beverage is one way to do this.

Our handy standard drinks guide can help:

  • Spirits 40% alcohol, 30ml nip
  • Wine 13% alcohol, 100ml average serving
  • Sparkling wine 13% alcohol, 100ml
  • Full Strength Beer 4.9% alcohol, 285ml glass
  • Light Beer 2.7% alcohol, 425ml glass
  • Cider 4.9% alcohol, 285ml glass

What constitutes one standard drink

Other factors that make it difficult to track how much you’re drinking include:

  • varying glass sizes at different venues
  • drinks mixed with unknown quantities of alcohol, e.g. in cocktails and alcoholic punches
  • shared jugs and casks
  • ‘topping up’ glasses before they’re empty.

You can also keep track of how many standard drinks you’re having by:

  • reading the label — all alcohol containers in Australia must show the number of standard drinks they contain
  • using an online calculator — check out the Drinks Calculator or the Standard Drink Calculator
  • asking the bar or restaurant staff — if you’re drinking a cocktail or other type of mixed drink, the bar staff should be able to tell you how many standards are in it.

Why count standard drinks?

For some people, counting standard drinks can be used as a way to help reduce their drinking and stick to the healthier Australian drinking guidelines.

By following the Australian drinking guidelines and having no more than 10 standard drinks a week and no more than 4 in one day, you can reduce your immediate risk of injury and accidents and your risk of developing cancers, including breast, stomach and bowl.1 Read the guidelines here.

Counting your drinks can also help track your blood alcohol concentration (BAC) levels and help determine whether you’re OK to drive. As a general rule, if you’re planning on drinking, you should drink no more than 1 standard drink per hour.2 You can read more about this here.

Want to know more about standard drinks? Check out the standard drinks guide on the Department of Health website.

  1. National Health and Medical Research Council. Australian Guidelines to Reduce Health Risks from Drinking Alcohol. Canberra: Australian Government; 2020.
  2. Nadalin T.BAC explained: Everything you need to know: RACV; 2020 [12.11.2021].

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Not necessarily. Although they have fewer calories, many light beers have almost as much alcohol as regular beer—about 85% as much, or 4.2% versus 5.0% alcohol by volume, on average.

Check the alcohol content of your beverage. Malt beverages are not required to list their alcohol content on the labels, so you may need to visit the bottler's Web site.

See What's a standard drink?

A typical 25-ounce (750 ml) bottle of table wine holds about 5 "standard" drinks, each containing about 5 ounces. This serving size of wine contains about the same amount of alcohol as a 12-ounce regular beer or 1.5 ounces of 80-proof spirits.

Get to know what 5 ounces looks like by measuring it out at home. That way you can estimate how many standard drinks you're being served in a restaurant or bar that uses large glasses and generous serving sizes.

See What's a standard drink?

Mixing alcohol with certain medications can cause nausea, headaches, drowsiness, fainting, a loss of coordination, internal bleeding, heart problems, and difficulties in breathing. Alcohol can also make a medication less effective. For more information, see Harmful Interactions: Mixing Alcohol with Medicines.

Examples of medical conditions for which it's safest to avoid drinking include liver disease (such as from hepatitis C), bipolar disorder, abnormal heart rhythm, and chronic pain.

Among the dangers of underage drinking:

  • Each year, an estimated 5,000 people under age 21 die from alcohol-related injuries.
  • The younger people are when they start to drink, the more likely they are to develop alcohol use disorder at some point in their lives.
  • Underage drinking is illegal—an arrest can lead to losing a job, a driver's license, or a college scholarship.

Even moderate amounts of alcohol can significantly impair driving performance and your ability to operate other machinery, whether or not you feel the effects of alcohol.

Heavy drinking during pregnancy can cause brain damage and other serious problems in the baby. Because it is not yet known whether any amount of alcohol is safe for a developing baby, women who are pregnant or may become pregnant should not drink.

About 50% of people who drink in this group have alcohol use disorder.

This "increased risk" category contains three different drinking pattern groups. Overall, nearly 20% of people who drink in this category have alcohol use disorder.

Only about 2% of drinkers in this group has alcohol use disorder.

A U.S. standard drink contains about 0.6 fluid ounces or 14 grams of pure alcohol (also known as an alcoholic drink-equivalent). That's the amount in 12 ounces of regular beer, 5 ounces of table wine, or 1.5 ounces of 80-proof distilled spirits.

What constitutes one standard drink

Distilled spirits include vodka, whiskey, gin, rum, and tequila.

Light to moderate drinking

  • Men: Up to 2 drinks per day
  • Women: Up to 1 drink per day

Heavy or at-risk drinking

  • Men: More than 4 drinks on any day or more than 14 drinks per week
  • Women: More than 3 drinks on any day or more than 7 drinks per week

Men: No more than 4 drinks on any day and no more than 14 per week

Women: No more than 3 drinks on any day and no more than 7 per week

People with a parent, grandparent, or other close relative with alcoholism have a higher risk for becoming dependent on alcohol. For many, it may be difficult to maintain low-risk drinking habits.

Pace yourself: It's best to have no more than one standard drink per hour, with nonalcoholic "drink spacers" between alcohol beverages. On any day, stay within low-risk levels of no more than 4 drinks for men or 3 for women. Note that it takes about 2 hours for the adult body to completely break down a single drink. Do not drive after drinking.

For comparison, regular beer is 5% alcohol by volume (alc/vol), table wine is about 12% alc/vol, and straight 80-proof distilled spirits is 40% alc/vol.

The percent alcohol by volume (alc/vol) for distilled spirits is listed on bottle labels and may be found online as well. It is half the "proof," such that 80-proof spirits is 40% alc/vol.