Determine the density of the type of wood to be used in the conversion (see Resources).
Convert the number of CCFs to the corresponding value in cubic meters. This is important, as the density is expressed in kilograms per cubic meters and you must use the same unit in order to obtain mass. Multiply the number of CCFs by 0.0283168 to obtain the desired result. For example, if the wood is 200 CCF, the conversion would be 200 times 0.0283169, or 5.66 cubic meters.
Use the density formula, "density = mass / volume," to compute mass, which is equal to the volume multiplied by density. Replace the density by the value determined in Step 1 and volume by the value determined in Step 2. For example, if you were to compute the mass of 100 CCFs of English Elm, you would obtain 28.3168 multiplied by 600 for a result of 16,990 kg.
Use the value in kilograms to convert it to tons. This can simply be done by dividing the number obtained in the previous step by 907.184. For the example above, you would obtain 18.72 tons.