How much alcohol is too much for a woman?
The numbers in official guidance are lower for women than for men, and they are easy to miscount. Here are the definitions from NIAAA and the NHS, and how to count your own week.
NIAAA defines binge drinking for a woman as 4 or more drinks in about two hours, and heavy drinking as 4 or more on any day or 8 or more in a week, with the figures higher for men [1]. A US standard drink holds 14 grams of pure alcohol: a 12-ounce regular beer, a 5-ounce glass of wine or a 1.5-ounce shot of spirits [2]. NIAAA also says the less alcohol, the better [3]. The NHS advises not regularly drinking more than 14 UK units a week [4].
What counts as one drink
In the US, one standard drink contains about 14 grams, or about 0.6 fluid ounces, of pure alcohol [2]. The amounts that match are:
| Drink | Amount in one standard drink |
|---|---|
| Regular beer | 12 fl oz at about 5% alcohol by volume [2] |
| Table wine | 5 fl oz at about 12% [2] |
| Malt liquor or hard seltzer | 8 to 10 fl oz at about 7% [2] |
| 80-proof spirits | 1.5 fl oz (a shot) at about 40% [2] |
This is where counting goes wrong. A generous pour at home, a large wine glass or a strong craft beer can hold more than one standard drink, so your real count may be higher than the number of glasses.
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What NIAAA calls binge and heavy drinking
| Pattern | Women | Men |
|---|---|---|
| Binge drinking | 4 or more drinks in about 2 hours [1] | 5 or more drinks in about 2 hours [1] |
| Heavy drinking | 4 or more drinks on any day, or 8 or more in a week [1] | 5 or more on any day, or 15 or more in a week [1] |
NIAAA also states that the less alcohol, the better [3]. So these are lines to stay under, not targets, and being under them does not mean drinking is risk-free.
What the NHS advises
UK guidance differs because it counts UK units. The NHS advises men and women not to drink more than 14 units a week on a regular basis, to spread drinking over 3 or more days if they regularly drink that much, and to have several drink-free days each week if they want to cut down [4]. Because units and US standard drinks are defined differently, we have not converted between them.
Why many women ask the question
The US Surgeon General’s January 2025 advisory identifies alcohol as the third leading preventable cause of cancer in the US and names seven cancers, including breast cancer in women [5]. In 2024, 8.0% of US women aged 18 and over (10.7 million) had alcohol use disorder in the past year [6].
Count your own week
- Write down every drink for seven days, with the size of the pour.
- Convert to standard drinks. Use the table above.
- Add them up and compare with the lines above.
- Note the alcohol-free days. See our guide to alcohol-free days.
- Repeat for a month if you want a real picture. A tracker makes this easier.
If the numbers worry you
If you have tried to cut down and could not, or you feel unwell when you stop, speak to a doctor. The NIAAA Alcohol Treatment Navigator helps adults find evidence-based care [7], and the SAMHSA National Helpline (1-800-662-4357) is free, confidential and open 24/7 [8].
Is Sober Girl right for you?
- use an Android phone (the iPhone app is coming soon)
- want a private tracker, with your journal kept on your device
- want a day counter, money saved and a daily check-in in one calm place
- want a Craving SOS with a breathing exercise and a 10-minute timer
- want to start free and add Plus only if you need the journal, insights or milestone cards
- need it on an iPhone today (the App Store version is coming soon)
- want a community feed, live coaching or an AI chat
- want a structured multi-week education program
- need medical help for heavy drinking or withdrawal. An app is not treatment, so see the safety notes above
Frequently asked questions
How much alcohol is too much for a woman?
NIAAA defines binge drinking for women as 4 or more drinks in about 2 hours and heavy drinking as 4 or more on any day or 8 or more in a week. It also says the less alcohol, the better.
What is one standard drink?
About 14 grams of pure alcohol: a 12-ounce regular beer at 5%, a 5-ounce glass of wine at 12%, or a 1.5-ounce shot of 80-proof spirits.
What is the NHS weekly limit?
The NHS advises not regularly drinking more than 14 units a week, spreading it over 3 or more days, and having several drink-free days. UK units differ from US standard drinks.
Is it safe to drink every night?
NIAAA says the less alcohol, the better, and the NHS advises several drink-free days each week for people who want to cut down. If you cannot skip a night, speak to a doctor.
Sources
- Understanding Alcohol Drinking Patterns. NIAAA.
- What Is A Standard Drink?. NIAAA.
- The Basics: Defining How Much Alcohol Is Too Much. NIAAA.
- Alcohol units. NHS (UK), last reviewed 27 August 2024. UK guidance, which uses UK alcohol units. US guidance uses standard drinks of 14 g of alcohol.
- Surgeon General's Report Calls for Cancer Warning Labels on Alcoholic Beverages. The ASCO Post, January 2025, reporting the US Surgeon General advisory of 3 January 2025. Reports that alcohol contributes to nearly 100,000 US cancer cases and about 20,000 deaths a year, and names seven cancers including breast cancer in women.
- Alcohol Use Disorder (AUD) in the United States: Age Groups and Demographic Characteristics. NIAAA, using the 2024 National Survey on Drug Use and Health.
- NIAAA Alcohol Treatment Navigator. NIAAA.
- National Helpline. SAMHSA. Free, confidential, 24/7 treatment referral line: 1-800-662-4357.
How we write these. Every figure above links to the source it came from, and we label self-reported and observational results as such. Where we could not find a source we trust, the page says so instead of filling the gap. Sober Girl is made by ShipAI Lab and this is not medical advice. Sources were checked on 6 October 2026. If you spot an error, email us at integrateopenai@gmail.com.
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