A cubic meter is a unit of volume, and kilogram is a
unit of weight. It's like asking how many apples are in
an orange. For example if it was a cubic meter of lead
it would weigh quite a bit more than a cubic meter of
air.
If the density of the material is known, it can be
multiplied by the volume of a substance to find the
weight of the substance. Conversely, the weight of the
material can be divided by the density to discover the
volume.
Note that density is dependent on the temperature and
pressure of the material in question. A kilogram of air
in a vacuum will be much larger than a kilogram of air
under high pressure. Similarly, a kilogram of ice
(frozen water) will be larger than a kilogram of warm
water. Test this by freezing a can of soda. It will
explode because water expands as it freezes.
Most tables of density are given assuming "STP" or
standard temperature and pressure. This is defined by
NIST as a temperature of 20 °C (293.15 K, 68 °F) and an
absolute pressure of 101.325 kPa (14.696 psi) or more or
less room temperature at atmospheric pressure at sea
level. Note that there are other systems which define
STP differently, but for engineering purposes the
default system is the NIST one.
The CBM of a consignment is always calculated
L x W x H
e.g. 3,20 x 2,45 x 1,56
= 12,23CBM
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