What is the volume of a milk carton in cubic inches?

The volume of a typical milk carton can vary, but a standard half-gallon milk carton holds approximately 64 fluid ounces. Since 1 fluid ounce is equivalent to about 1.8047 cubic inches, a half-gallon carton has a volume of roughly 115.5 cubic inches. Larger cartons, such as a full gallon, would have a volume of around 231 cubic inches.