This is exceptionally well made and useful. I have been referencing it myself and sharing it with others.
Firewood & Cord Calcuations
How to figure out how much wood you've got!
A cord of firewood measures 4' x 4' x 8' and contains 128 cubic feet. You can calculate the size of a stack in cubic feet by measuring the height, depth, and length of the stack and multiplying one by the other two. For instance: