36inch x 36 inch x 36 inch
1 cubic metre.
It is depend on the moisture of logs. Generally, BDMT=CBM - moisture For example: 1cbm of pine logs has 65% moisture. It means that 1cbm of logs content 65% of water, and only 35% of wood. So, in this case, 1 BDMT=0.35CBM or 1CBM=0.35 BDMT
You don't! A kilogram is a measure of mass. A cubic metre is a measure of volume. The two measure different things and it is not sensible to even consider converting from one to the other. If you are not convinced, consider a cubic metre of air. How many kilograms? Next consider a cubic metre of lead. How many kilograms?