64 fluid ounces = about 1.893 liters. A fluid ounce US = 29.5737 ml 64 fluid ounces US = 1892.7168 ml or ~1.8927 liters A fluid ounce Imperial = 28.35 ml 64 fl.oz.(BI) = 1814.4 ml or 1.8144 liters

64 ounces equals 1,892.705892 milliliters, which is apporximately 1.892 liters. A rough estimate is that 32oz (1 quart) = .946mL (1 liter) So you have two quarts of fluid, which is just under 2 liters of fluid, or 1,892mL. Hope this helps!

64 oz equals 1.89270 lilters. A litre is a unit of capacity. An ounce is a unit of mass. Without some unit of density to compare, the two units are incompatible.