Board Feet Formula:
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Board feet (BF) is a unit of measurement for lumber volume in North America. It represents a piece of wood that is 1 foot long, 1 foot wide, and 1 inch thick (or the equivalent volume).
The calculator uses the board feet formula:
Where:
Explanation: The formula calculates the volume of lumber by multiplying the three dimensions and dividing by 12 to convert to board feet.
Details: Board feet calculation is essential for lumber pricing, inventory management, and project planning in woodworking and construction industries.
Tips: Enter thickness and width in inches, length in feet. All values must be positive numbers. The calculator will compute the board footage.
Q1: Why divide by 12 in the formula?
A: We divide by 12 because one board foot equals 144 cubic inches (12" × 12" × 1"), and our calculation gives us cubic inches which we convert to board feet.
Q2: How accurate is board feet measurement?
A: It's a standardized measurement but actual volume may vary based on wood species, moisture content, and milling method.
Q3: Can I use this for rough or planed lumber?
A: Typically, board feet calculations are based on nominal dimensions (before planing) for rough lumber, and actual dimensions for surfaced lumber.
Q4: How do I calculate board feet for multiple pieces?
A: Calculate board feet for one piece and multiply by the number of identical pieces, or enter total dimensions if they're the same size.
Q5: Is board feet used outside North America?
A: Most countries use cubic meters for lumber measurement, but board feet remains the standard in the United States and Canada.