How many kilogram are in cubic feet?

Answer 1

None - or to put it another way:

Cubic feet of what? There are more kg in 1 cu ft of Mercury than 1 cu ft of hydrogen.

Kg are a measure of weight.

Cubic feet are a measure of volume.

Weight and volume are related by density (of the substance).

Answer 2

Kilograms and cubic feet are units of different measurements, so they cannot be directly converted to each other. Kilograms measure mass, while cubic feet measure volume. The conversion would depend on the density of the substance being measured.

Answer 3

None!!!!

You misunderstand.

Cubic feet is a imperial measure of volume/space.

Kilogram is a metric measure of mass/weight.