The cubic metre or cubic meter (in American English) is the SI derived unit of volume. Its SI symbol is m3. It is the volume of a cube with edges one metre in.
Now, 1 bag of cement - 50 kg (depending on where you are) and for practical purposes 1 cu m of Portland Cement = 30 bags (based on density of cement).
Convert between Cubic foot and Cubic meter Conversion formula. 1 cubic meter (m3) = cubic feet (ft3). 1 cubic foot (ft3) = cubic meters.