Wood Stove Heating Calculator

About this calculator

Firewood is typically bought and stacked by the cord — a stack 4 feet high, 4 feet deep, and 8 feet long (128 cubic feet). This calculator estimates how many cords a wood stove will burn through in a heating season by combining the area being heated, the number of hours the stove runs, and the stove's efficiency rating, since less-efficient stoves need more fuel to deliver the same warmth.

Homeowners who heat with wood, especially in rural or off-grid settings, use this kind of estimate to plan how much wood to buy or split before winter and to budget the cost against other heating fuels. It's also useful when comparing an old, inefficient stove against a newer EPA-certified model, since a jump from roughly 50% to 75%+ efficiency can noticeably cut the cords needed per season.