Firewood Calculator

This tool measures firewood three ways. Enter the length, height and piece length of a stack and it returns the stacked volume, the full cords and the face cords; enter a face cord quote instead and it converts that to full cords and to the price per full cord you are really being charged. A full cord is a fixed 128 cubic feet, but a face cord is only as deep as the pieces are long, so a 16 inch face cord is a third of a cord while a 24 inch one is a half. The third action turns cords into delivered heat at your appliance efficiency, and asks you for the heat value per cord rather than guessing a species, because published tables disagree by several million BTU for the same tree.

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Measurements In
The answer is in cords either way, because that is the unit firewood is sold by. This only changes the tape measure you are reading from, and the volume is shown back in the unit you pick.
The length of the face of the stack, in the unit you chose above.
How high the stack is, in the unit you chose above.
How long the split pieces are, which is also how deep a single row of the stack is, in the unit you chose above. Measure a few; they are rarely as uniform as advertised.
Leave it at zero to skip the price per cord.
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Measurements In
The answer is in cords either way, because that is the unit firewood is sold by. This only changes the tape measure you are reading from, and the volume is shown back in the unit you pick.
Also sold as a rick or a rank. One face cord is a 4 ft by 8 ft face of stacked wood.
How long the split pieces are, which is also how deep a single row of the stack is, in the unit you chose above. Measure a few; they are rarely as uniform as advertised.
Leave it at zero to skip the price comparison.
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Seasoned dense hardwoods such as hickory, oak and black locust are usually quoted between about 24 and 28, maples and birches near 20 to 24, and softwoods such as pine and spruce near 12 to 18. Published tables disagree by several million for the same species, so take the figure from your own extension service.
EPA certified stoves are commonly rated between 65 and 80 per cent. An older stove is lower and an open fireplace can be near zero over a whole night.
Leave it at zero to skip the cost lines.
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