📏 Board Foot Calculator
Calculate board feet for lumber projects. Determine wood volume, quantity, and total cost for your woodworking and construction needs.
Lumber Dimensions
Results
Board Feet per Piece
6.67 BF
Total Board Feet
6.67 BF
Total Cost
$27.68
Formula: Length (ft) × Width (in) × Thickness (in) ÷ 12
Unit Conversion: 1 Board Foot = 144 cubic inches = 1/12 cubic foot
Frequently Asked Questions
A board foot is a unit of volume used for lumber. One board foot equals a piece of wood 12 inches long, 12 inches wide, and 1 inch thick (144 cubic inches).
Use the formula: Board Feet = Length (ft) × Width (in) × Thickness (in) ÷ 12. The length should be in feet, while width and thickness should be in inches.
A 2x4 lumber piece contains different board feet depending on its length: 8 feet long = 5.33 board feet, 10 feet long = 6.67 board feet, 12 feet long = 8 board feet.
Board feet measure volume (3D), while linear feet measure length (1D). Board feet consider width, thickness, and length, whereas linear feet only consider length.
Multiply the total board feet by the price per board foot: Total Cost = Board Feet × Price per Board Foot.
Board feet provide a standardized way to price lumber regardless of the actual dimensions, making it easier to compare costs across different sizes.
This calculator provides accurate results based on the standard board foot formula. However, actual lumber measurements may vary slightly due to planing and drying processes.
This calculator uses imperial units (feet and inches). For metric measurements, convert to imperial units first: 1 meter = 3.28 feet, 1 centimeter = 0.39 inches.
Disclaimer
This calculator provides estimates for planning purposes. Always verify measurements and calculations for your specific project. Actual lumber dimensions may vary due to manufacturing processes.