Chimney Sweep & Firewood Burn Rate Calculator
Figure out how many cords of firewood to stock up on based on how often you burn, what wood you use, and how efficient your stove is.
Estimated Firewood Needed
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Total burn hours—
Base cords needed (before efficiency adj.)—
Efficiency-adjusted cords needed—
Estimated seasonal cost—
About this calculator
Estimate how much firewood you'll need for the season based on stove efficiency, heating hours, wood type, and outdoor temperature.
Frequently Asked Questions
How much heat does a cord of firewood provide?
It varies by wood species — dense hardwoods like oak provide roughly 20-24 million BTUs per cord, nearly double what softwoods like pine provide.
Does stove efficiency really matter that much?
Yes. An old inefficient stove (40-50%) can burn nearly twice as much wood as a modern EPA-certified stove (70-80%) to produce the same heat.
Should I buy extra firewood as a buffer?
Most experienced burners add 10-20% extra to account for colder-than-average stretches and wood that needs extra seasoning time.