Board Foot Formula:
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A board foot is a unit of measurement for lumber volume. One board foot equals 144 cubic inches of wood, typically represented as a piece of wood 1 inch thick, 12 inches wide, and 12 inches long.
The calculator uses the board foot formula:
Where:
Explanation: The formula converts linear measurements into volume by accounting for all three dimensions of the lumber.
Details: Accurate board foot calculation is crucial for lumber pricing, project planning, and material estimation in woodworking and construction.
Tips: Enter linear feet, thickness in inches, and width in inches. All values must be positive numbers.
Q1: Why divide by 12 in the formula?
A: The division by 12 converts the square inches (from thickness × width) into square feet, which when multiplied by length in feet gives board feet.
Q2: How does board foot differ from linear foot?
A: Linear foot measures length only, while board foot measures volume (length × width × thickness).
Q3: What's a typical board size?
A: Common sizes include 1×4, 2×4, 1×6, etc. (nominal dimensions, actual sizes are slightly smaller).
Q4: How is board foot pricing determined?
A: Prices vary by wood species, grade, and market conditions. Hardwoods are often priced per board foot.
Q5: Should I account for wood shrinkage?
A: For precise calculations, use actual dimensions (not nominal) as wood shrinks as it dries.