The short answer
NIAAA defines binge drinking as drinking that brings blood alcohol to 0.08% or higher, which typically means 4 or more drinks for women or 5 or more for men in about two hours. Heavy drinking is 4 or more drinks on any day or 8 or more a week for women, and 5 or more on any day or 15 or more a week for men. A "drink" here is a US standard drink of about 14 grams of alcohol.
Work it out for your drink
A typical strength is filled in. Check your label.
That is
1.2 US standard drinks
= 2.1 UK units
= 1.7 Irish standard drinks
= 1.2 Canadian standard drinks
Each one is 1.2 × one US standard drink:
Key takeaways
- Binge drinking: 4 or more drinks (women) or 5 or more (men) in about two hours, enough to reach 0.08% blood alcohol (NIAAA).
- Heavy drinking: 4+ drinks on any day or 8+ a week for women; 5+ on any day or 15+ a week for men (NIAAA).
- High-intensity drinking is twice the binge threshold or more: 8+ drinks for women, 10+ for men.
- These counts use US standard drinks of about 14 grams of alcohol; a large glass of wine or a strong pint can be more than one.
The definitions, side by side
Two US agencies publish the definitions most people mean when they ask how many drinks is binge drinking. NIAAA, the National Institute on Alcohol Abuse and Alcoholism, updated its page in January 2026. The CDC uses the same drink counts for binge drinking and for heavy weekly drinking.
Every count below is in US standard drinks. NIAAA defines one as about 14 grams, or 0.6 fluid ounces, of pure alcohol: roughly 12 oz of 5% beer, 5 oz of 12% wine or 1.5 oz of 40% spirits. A UK unit is 8 grams, so we have added an approximate UK-unit figure using those two definitions.
| Pattern | Women | Men |
|---|---|---|
| Binge drinking (in about 2 hours) | 4 or more drinks (about 7 UK units) | 5 or more drinks (about 9 UK units) |
| Heavy drinking, any single day | 4 or more drinks | 5 or more drinks |
| Heavy drinking, per week | 8 or more drinks (about 14 UK units) | 15 or more drinks (about 26 UK units) |
| High-intensity drinking | 8 or more drinks (about 14 UK units) | 10 or more drinks (about 18 UK units) |
Why binge drinking is defined by blood alcohol
NIAAA defines binge drinking as a pattern of drinking that brings blood alcohol concentration to 0.08%, or 0.08 grams of alcohol per decilitre, or higher. The drink counts, 4 for women and 5 for men in about two hours, are the amounts that typically get an adult there.
That is why time matters as much as number. Four drinks spread across an afternoon and evening is a different pattern from four drinks in two hours.
Heavy and high-intensity drinking
NIAAA defines heavy drinking for women as 4 or more drinks on any day or 8 or more per week, and for men as 5 or more drinks on any day or 15 or more per week. The CDC uses the same weekly figures. SAMHSA, another US agency, uses a different definition: binge drinking on five or more days in the past month.
High-intensity drinking means drinking at twice the binge thresholds or more. NIAAA puts that at 10 or more standard drinks for men and 8 or more for women.
One conversion is worth noticing. Eight US standard drinks a week, NIAAA's heavy-drinking line for women, is about 112 grams of alcohol, or 14 UK units, the same as the NHS advice not to regularly drink more than 14 units a week.
Your glass is often more than one drink
Counting drinks only works if each drink is a standard one, and many are not. By our arithmetic using NIAAA's definition, a standard 175 ml glass of 12% wine holds about 1.2 US standard drinks, so four of them is close to five standard drinks. The NHS counts that same glass as 2.1 UK units and a pint of 5.2% beer as 3 units.
The standard drink calculator below works it out for your own drink, glass and strength, in US drinks and UK units.
Why the pattern matters
The CDC lists short-term risks of excessive drinking that include injuries such as road crashes and falls, violence and alcohol poisoning, and long-term risks that include high blood pressure, heart disease, stroke, liver disease, several cancers, depression, anxiety and memory problems. Binge and heavy drinking are both forms of excessive drinking in its definitions.
If your usual week or a usual night crosses these lines and you want to change it, our guide on how to stop drinking every night covers practical steps, and the Dry January tracker helps you count alcohol-free days.
Common questions
Is 4 drinks a binge for women?
Yes, by NIAAA and CDC definitions, if the 4 drinks are standard drinks taken in about two hours. That amount typically brings a woman's blood alcohol to 0.08% or higher, which is how NIAAA defines a binge.
Is drinking a bottle of wine a binge?
Usually. By our arithmetic using NIAAA's standard drink, a 750 ml bottle of 12% wine is about 5 US standard drinks, more than the binge threshold for women (4) and equal to it for men (5) if drunk in about two hours.
How many drinks a week is too much?
NIAAA calls 8 or more drinks a week heavy drinking for women and 15 or more for men. The NHS advises not regularly drinking more than 14 UK units a week. Canada's 2023 guidance describes 1 to 2 drinks a week as low risk, 3 to 6 as moderate risk and 7 or more as increasingly high risk.
When to get help
This site offers self-help tools and information, not medical advice. Talk to a doctor, or call one of the lines below, if:
- you feel shaky, sweaty, sick or anxious when you haven't had a drink;
- you find it hard to stop once you start, or you want to cut down and can't;
- drinking is causing problems with your health, work or the people close to you.
Before you stop: It can be very dangerous to stop drinking suddenly if you are dependent on alcohol. If you get withdrawal symptoms, get medical help before you try to stop drinking.
Free, confidential helplines
- United States:SAMHSA National Helpline1-800-662-HELP (4357)Treatment referral and information, 24/7.
- United States:988 Suicide & Crisis LifelineCall or text 988Free and confidential support for people in distress, 24/7.
- United Kingdom:Drinkline0300 123 1110The national alcohol helpline, free and in complete confidence. Weekdays 9am to 8pm, weekends 11am to 4pm.
In an emergency, call your local emergency number.
Sources
- Drinking Levels and Patterns Defined. National Institute on Alcohol Abuse and Alcoholism (NIAAA). niaaa.nih.gov
- About Alcohol Use. Centers for Disease Control and Prevention (CDC). cdc.gov
- What Is A Standard Drink?. National Institute on Alcohol Abuse and Alcoholism (NIAAA). niaaa.nih.gov
- Alcohol units. NHS. nhs.uk
- Canada's Guidance on Alcohol and Health. Canadian Centre on Substance Use and Addiction. ccsa.ca
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