Why are most wine bottles 750 milliliters

By the 17th century, Britain had become the largest importer of wine from Bordeaux, France.

However, a Gallon is needed in Britain or a Litre in France. A gallon is 4.546 litres.

For the sake of calculation, the unit of transport was unified as 50 gallons, or 225 liters, which is the capacity of a small Bordeaux oak barrel.

Later, in order to meet the needs of international trade, wine bottle shape and capacity needed to be standardized.

So the Clarets divide a 225-liter oak barrel into 300 bottles. One bottle is 750 milliliters. A gallon is the equivalent of six bottles.

That’s why a case of wine is usually six or 12 bottles.

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