How to Calculate Board Feet

Board feet is a standard measurement of lumber volume used in North America by woodworkers, carpenters, and lumber suppliers. One board foot equals:

• 1 foot long × 1 foot wide × 1 inch thick
• Or any equivalent volume (e.g., 2 ft × 1 ft × 0.5 in)
• 12 board feet = 1 cubic foot of lumber

The board foot formula is: (Thickness (in) × Width (in) × Length (ft)) ÷ 12 × Quantity = Board Feet

Our board foot calculator helps you quickly determine how much lumber you need for your woodworking projects, whether you're building furniture, cabinetry, or other wood constructions.