Why is area measured in square units?

Area is measured in square units because The area of a figure is the number of squares required to cover it completely, like tiles on a floor. Area of a square = side times side. Since each side of a square is the same, it can simply be the length of one side squared.

So when measuring you can have precise units. The area of a figure is the number of squares required to cover it completely, like tiles on a floor.