How Many Ounces In a Bottle of Wine 

Everything you need to know about how many glasses are in a bottle of wine, ounces in a bottle of wine, and how much is in various wine bottles.

There are 25.36 fluid ounces in a 750 ml wine bottle. But, not all wine bottles are the same size! We’re breaking down everything you need to know about measuring wine here. 

How many ounces are in a glass of wine?

There are 5.07 standard 5 oz glasses of wine in a 750 ml bottle, but a 5 oz pour is considered the same as 150 mL resulting in 5 equal glasses of wine. Some restaurants buck this tradition and serve only 4 oz glasses or offer larger glasses of wine at 6 or 8 oz. 

Before we look further into wine, a quick trivia question. Scroll to the bottom for the answer.

Why does the U.S. have 750 mL wine bottles?

In 1979, the US adopted the metric system for liquor and wine bottles, with the basic wine bottle becoming 750 mL, as in Europe. Of course, the US stayed with imperial measurements for almost everything else besides medicines, engineering, and some nutritional labels. It certainly made sense to standardize on the same size bottle as the Europeans since wines from those countries are so popular in the United States. Oh, and it also made it easy for nations to collect tax on standard sized wine imports. No big surprise there.

The oddity here is that in Europe the standard liquor bottle size is 700 ml vs the wine bottles 750 ml. At first glance, this makes no sense, but consider that the different nations of Europe have different size shots. 20, 25, 35, and 50 ml shots are all used in various nations, and 700 ml is equally divisible by all of these.

There are, of course, other wine bottle sizes; it is just that some of them are old school (read that as not used any more) or just not often used. Below is a chart showing various size bottles and containers for wine with their ml or liter, ounce, and 5 oz glass of wine equivalents.

What Is An Ounce?

Ounce comes from the Roman term “uncia.” An uncia was 1/12 of a Roman copper bar that was used as a tool to measure the length of an inch and the weight of an ounce.

Today’s ounce weight and volume measurements, however, come from England. A fluid ounce is 1/16^th of a quart. A dry ounce weighs 1/16 of a pound, or 28.35 grams. A fluid ounce is the amount of water that weighs one ounce.

Converting Wine Bottles to Ounces

Need to convert a certain wine bottle size to ounces? This quick conversion guide has you covered!

Container Size	Name	Fluid Oz in Bottle
187 ml	Split or Piccolo	7.4
200 ml	Quarter	7.9
250 ml	Chopine	9.9
375 ml	Demi	14.8
750 ml	Standard	30
1.5 L	Magnum	59
2.25 L	Marie-Jeanne	89
3.0 L	Double Magnum or Boxed Wine	118
4.5 L	Jeroboam	177
6.0 L	Imperiale	237
9.0 L	Salmanazar	355
12.0 L	Balthazar	473
15.0 L	Nebuchadnezzar	591
18.0 L	Solomon	710