What is the chemical formula of milk?

Milk is a complex solution composed of water, solids, fat, proteins, lactose and minerals. Many of these components are compounds on their own, giving milk its very complicated chemical makeup.

Milk is very nutritious due to its high mineral and vitamin content, as well as the energy-giving fat content. The average glass of milk contains everything from calcium, to vitamins A, D, E and K. However, milk is mostly composed of water, with most milk having a water content of more than 85 percent. Lactose, or milk sugar, makes up more of milk's mass than fat or protein in most cases.