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Lumber Calculator - Board Feet Calculator
Free lumber calculator. Calculate board feet for wood projects. Estimate lumber needs for construction and woodworking.
Lumber Calculator
Calculate board feet for lumber
Lumber Estimate
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Lumber Calculator
Calculate board feet for lumber purchases. Board feet is the standard unit for measuring and pricing hardwood lumber.
Board Feet Formula
BF = (Thickness × Width × Length) / 144
Where thickness and width are in inches, length is in feet. One board foot = 144 cubic inches (1" × 12" × 12").
Frequently Asked Questions
What is a board foot?
A board foot is 144 cubic inches of wood - equivalent to a board 1 inch thick, 12 inches wide, and 12 inches long.
Are nominal and actual sizes different?
Yes! A 2x4 is actually 1.5" × 3.5". Lumber is measured at nominal (pre-dried) dimensions but sold at actual dimensions.
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