The Energy in Firewood calculator estimates the energy (BTUs) in an amount seasoned(dried) firewood based on the dimensions of the stack which is used to compute the volume of firewood.
INSTRUCTIONS: Choose units and enter the following:
(L) Length of Firewood Stack.
(W) Width of Firewood Stack.
(H) Height of Firewood Stack.
Firewood Energy (E): The calculator returns energy in BTUs.
The Math / Science
A cord of firewood is a relatively well stacked (tight) pile of firewood measured 4 feet high, 4 feet wide and 8 feet long.