Board Feet Formula:
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Definition: This calculator converts linear measurements of lumber to board feet, the standard measurement for wood volume.
Purpose: It helps woodworkers, carpenters, and DIYers accurately estimate wood quantities for projects and purchasing.
The calculator uses the formula:
Where:
Explanation: The formula accounts for all three dimensions of the wood to calculate its total volume in board feet.
Details: Board feet is the standard measurement for lumber pricing and inventory. Accurate conversion ensures proper material estimation and cost control.
Tips: Enter the length in feet, thickness in inches, and width in inches. All values must be > 0.
Q1: What exactly is a board foot?
A: One board foot equals 144 cubic inches of wood (12" × 12" × 1").
Q2: Why divide by 12 in the formula?
A: The division converts the cubic inches result to board feet (since 1 board foot = 144 cubic inches, and 12" × 12" = 144).
Q3: How do I measure thickness and width?
A: Measure in inches at the thickest/widest point for rough lumber, or actual dimensions for dressed lumber.
Q4: Does this work for metric measurements?
A: No, this calculator uses imperial units. Convert metric to feet/inches first.
Q5: How does this differ from square feet?
A: Board feet measures volume (including thickness), while square feet only measures surface area.