The standard wine bottle worldwide is 750 milliliters (ml) or 25.4 ounces. How did we arrive at that size? Starting with the 1973 vintage, the world’s nations agreed that the “standard bottle” would be 750ml in size, and a standard case of wine would be 9.0L. Before this agreement, American wine bottle sizes were 4/5 pint, 4/5 quart (25.6 ounces), ½ gallon, and 1 gallon.