How many ml are in a glass of wine? In the UK, a small glass is 125 ml, a standard or medium glass is 175 ml, and a large glass is 250 ml. In the US, a standard pour is 5 fluid ounces, or about 148 ml, which is one standard drink at 12% ABV.
The glass itself usually holds far more than the pour. A typical modern wine glass can hold 350 to 500 ml when full, so a home pour that looks modest can easily be 200 ml or more. This guide covers official pour sizes, ounce conversions, how many glasses a bottle gives, and how much alcohol each size contains.
Standard wine glass sizes in ml
| Glass | Millilitres | US fluid ounces | Glasses per 750 ml bottle |
|---|---|---|---|
| UK small | 125 ml | 4.2 oz | 6 |
| US standard pour | 148 ml | 5 oz | 5 |
| UK standard (medium) | 175 ml | 5.9 oz | 4.3 |
| US generous pour | 177 ml | 6 oz | 4.2 |
| UK large | 250 ml | 8.5 oz | 3 |
In the UK, still wine sold by the glass must be offered in 125 ml or 175 ml measures, or multiples of them, and licensed premises must make the 125 ml size available to customers. A 250 ml "large" glass is two 125 ml measures, or one third of a bottle.
What is a large glass of wine in ml?
A large glass of wine is 250 ml in UK pubs and restaurants. That is a third of a 750 ml bottle and about 8.5 US fluid ounces. At 13% ABV it contains about 3.3 UK units.
How many ml is an average glass of wine at home?
There is no fixed home measure, which is why home pours drift. A 2017 study in The BMJ found the average capacity of wine glasses in England rose from about 66 ml in the 1700s to about 449 ml by 2016–17. A bigger glass makes the same pour look smaller, so people tend to pour more. Measuring a usual pour once with a measuring jug is the simplest fix.
How many units are in each glass size?
In the UK, one unit is 10 ml of pure alcohol. The table shows UK units by glass size and ABV.
| Glass | 11% ABV | 12% ABV | 13% ABV | 14% ABV |
|---|---|---|---|---|
| 125 ml | 1.4 | 1.5 | 1.6 | 1.8 |
| 175 ml | 1.9 | 2.1 | 2.3 | 2.5 |
| 250 ml | 2.8 | 3.0 | 3.3 | 3.5 |
| 750 ml bottle | 8.3 | 9.0 | 9.8 | 10.5 |
A large 250 ml glass of 13% wine is about 3.3 units, nearly a quarter of the UK weekly low-risk guideline of 14 units. For bottle totals, see how many units are in a bottle of wine.
How many standard drinks are in a glass of wine?
In the US, one standard drink is 14 grams of pure alcohol, the amount in 5 oz of 12% wine.
| Pour | 12% ABV | 14% ABV |
|---|---|---|
| 5 oz (148 ml) | 1.0 | 1.2 |
| 6 oz (177 ml) | 1.2 | 1.4 |
| 8 oz (237 ml) | 1.6 | 1.9 |
| 9 oz (266 ml) | 1.8 | 2.1 |
| 10 oz (296 ml) | 2.0 | 2.3 |
A 10 oz glass of 12% wine is two standard drinks, not one. For whole bottles in US terms, see how many standard drinks are in a bottle of wine.
The formula for any glass of wine
UK units = ml × ABV ÷ 1,000
US standard drinks = fluid ounces × ABV (as a decimal) ÷ 0.6
Example 1: a 175 ml glass at 13.5% (UK units)
175 × 13.5 ÷ 1,000 = 2.36, or about 2.4 units
Example 2: a 9 oz pour at 12% (US standard drinks)
9 × 0.12 = 1.08 oz of alcohol, and 1.08 ÷ 0.6 = 1.8 standard drinks
Example 3: converting ml to ounces
250 ml ÷ 29.57 = 8.5 fluid ounces
The alcohol units calculator and the standard drink calculator do this arithmetic for any pour.
Why glass size matters for tracking
Counting "glasses" is one of the most common ways people under-count wine:
- The pour changes with the glass. A large-bowl glass makes 175 ml look like a small pour.
- Top-ups are invisible. Refilling before the glass is empty makes the number of glasses meaningless.
- ABV varies. Many reds are 13.5% to 14.5%, so the same 175 ml glass can be 2.4 to 2.5 units instead of 2.1.
- Restaurant sizes vary. A "glass" on a menu can be 125, 175, or 250 ml. Menus in the UK usually state the size.
Tracking millilitres rather than glasses solves all four. If you pour at home, try marking your usual 125 ml or 175 ml level once using a measuring jug.
Track wine by the millilitre
Alcohol Tracker° lets you log wine by pour size and ABV and keeps a weekly units total, so a large glass counts as a large glass. You can [see Alcohol Tracker° for iPhone and Apple Watch](/) if you want an easier way to keep track.
Units and standard drinks do not measure impairment. Never use a glass count to decide whether you can drive.
Frequently Asked Questions
How many ml are in a standard glass of wine?
In UK pubs and restaurants a standard (medium) glass is 175 ml. In the US, a standard pour is 5 oz, about 148 ml. The UK small glass is 125 ml.
How many ml is a large glass of wine?
A large glass is 250 ml, which is one third of a 750 ml bottle.
How many glasses of wine are in a bottle?
A 750 ml bottle gives six 125 ml glasses, about four 175 ml glasses, three 250 ml glasses, or five 5 oz US pours.
How many units are in a 175ml glass of wine?
A 175 ml glass contains 2.1 units at 12% ABV, 2.3 units at 13%, and 2.5 units at 14%.
How many ounces are in a glass of wine?
A US standard pour is 5 oz. UK measures convert to about 4.2 oz for 125 ml, 5.9 oz for 175 ml, and 8.5 oz for 250 ml.
The quick answer
How many ml are in a glass of wine? UK bars pour 125 ml (small), 175 ml (standard), or 250 ml (large), and a US standard pour is 5 oz or about 148 ml. A 175 ml glass of 12% wine is 2.1 UK units, and a 5 oz pour of 12% wine is one US standard drink.
Sources: NHS alcohol units, Licensing Act 2003 (Mandatory Licensing Conditions) (Amendment) Order 2014, NIAAA: What is a standard drink?, CDC: About standard drink sizes, and Zupan et al., The BMJ, 2017.
Keep exploring
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