How do you calculate cubic meters into meters squared?

Answer 1

Meters cubes are a unit of volume, meters squared is a unit of area. They are different things, so you can't convert between them.
You can not, a 2 dimensional object can not become a 3 dimensional object via conversion as the 2d object has no depth by witch to convert to.

Answer 2

Cubic meters (m^3) measure volume, while square meters (m^2) measure area. To convert cubic meters to square meters, you would need to know the depth (height) of the cubic space. Then you can divide the volume in cubic meters by the depth to get the area in square meters.

Answer 3

Since cubic meters are units of volume and square meters are units of area, the two are not mutually interconvertible. They do not measure the same things.