More information is needed, as different species of trees have different densities for their wood.
This is no a possible conversion, because you can not convert a factor of distance (metre) to a weight (kilogram)
The density of wood varies hugely between species so there is no single answer.
Kilogram per cubic meter is the one that doesn't belong. Square meter is meter^2 and cubic meter is meter^3 but kilogram per cubic meter is a density
You can't convert just Kgs. to cubic metres. A kilogram is a measure of weight while a cubic meter is a measure of size.
You are trying to convert weight to mass. There is not nearly enough information.
That's the same as converting cubic meter to kilograms. You can't do it, unless you know the density of the specific substance you are working with.
The medium density should given to convert from mass (kilogram) to volume (1 cubic meters). Assuming water of 1000 kg/cubic meter, than 1 cubic meter would contain 1000 kilograms,
How to convert Cubic meter to BTU
Mass: kilogram, length: meter, volume: cubic meter, density: kilogram / cubic meter, temperature: celcius or kelvin.
These are all easy to find in your book: Length . . . . . . . Meter Mass . . . . . . . . . Kilogram Volume . . . . . . . Cubic Meter (* Liter is 1/1000th m3, or one dm3) Density . . . . . . . Kilogram per cubic meter Time .. . . . . . . . . Second Temperature . . . Kelvin or Celsius degree (same size)
This question cannot be answered sensibly. A kilogram cubic metre is a measure with dimensions [ML3]. A kilogram square metre has dimensions [ML2]. Basic dimensional analysis teaches that you cannot convert between measures with different dimensions such as these without additional information.
How to convert mmbtu to cubic meter