Calculate the volume of lumber in board feet for woodworking and construction projects.
Dimensions
in
in
ft
Lumber Volume
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About this calculator
Overview
A board foot is a specialized unit of measure for the volume of lumber in the United States and Canada. It is the volume of a 12-inch by 12-inch board, 1 inch thick.
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Pro Tips
When buying rough lumber, always add 10-20% for waste and defects.
Check if the lumber is S2S (surfaced two sides) or rough. S2S will be thinner than the stated thickness.
In the metric system, wood volume is typically sold by the cubic meter (m³).
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Fun Facts
"1 board foot is exactly 144 cubic inches."
"Lumber thickness is often sold in 'quarters' (e.g., 4/4 is 1 inch, 8/4 is 2 inches)."
"Hardwood lumber is usually measured by its rough-sawn volume, while softwood (like 2x4s) is sold by nominal dimensions."
