Board Foot Calculator
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Designed for mobile devices with touch-friendly inputs and responsive design, verified across the 12 most common device widths in our QA suite.
Accurate Results
Precise calculations using the standard board foot formula documented by the <a href="https://www.fpl.fs.usda.gov/" rel="noopener">USDA Forest Products Laboratory</a>, keeping bids aligned with industry math.
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Frequently Asked Questions
A board foot is a unit of volume for lumber. It equals 144 cubic inches, or a piece of wood 1 inch thick, 12 inches wide, and 12 inches long. It's the standard measurement for buying and selling lumber in North America.
Use the formula: (Thickness in inches × Width in inches × Length in feet) ÷ 12 = Board Feet. For example, a 2×4 that's 8 feet long: (1.5 × 3.5 × 8) ÷ 12 = 3.5 board feet.
Lumber is sold by nominal size (like 2×4), but the actual size is smaller after drying and planing. A nominal 2×4 is actually 1.5×3.5 inches. Always use actual dimensions for accurate board foot calculations.
Yes! The board foot formula works for all types of lumber, including hardwood, softwood, and engineered wood. The calculation is the same regardless of wood species or grade.
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