Lumber Board Feet Calculator
The Lumber Board Feet Calculator converts the dimensions of your lumber into board feet, the standard unit lumber yards use for pricing hardwood and specialty wood.
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How This Tool Works
Enter the thickness, width, and length of a single board, plus how many pieces you need, to get total board feet.
Formula & Method
Board feet = (thickness in inches × width in inches × length in feet) ÷ 12, multiplied by quantity.
Example Calculation
A 2×6 board that's 8 ft long is 8 board feet. Ten of them total 80 board feet.
Frequently Asked Questions
What is a board foot?+
A board foot is a unit of volume equal to a piece of wood 12 inches long, 12 inches wide, and 1 inch thick (144 cubic inches).
Why does lumber use board feet instead of linear feet?+
Board feet account for thickness and width, not just length, which matters for pricing hardwoods sold by volume rather than standard dimensional lumber.
Is nominal or actual lumber size used here?+
Enter whichever dimensions you're quoted — nominal (e.g., "2×6") for framing lumber pricing, or actual measured size for rough-sawn or hardwood lumber.
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