One litre of liquid is equal to one full 750 ml bottle and an additional third of a bottle. One litre equals 1,000 ml, or millilitres.
A 750 ml bottle is comparable to 0.75 litres, or three-quarters of a litre. In the metric system, a litre is the primary unit for measuring volume; it is roughly equivalent to a quart in the United States. Considering that an ounce of liquid is around 30 millilitres, a 750 ml bottle is equivalent to somewhat more than 25 fluid ounces, nearly 1 pint, and slightly more than 3 standard cups. A normal cup contains roughly 200 millilitres.