Lumber Calculator
Calculate board feet and total cost for dimensional lumber from thickness, width, length, and quantity.
Board dimensions
Board feet per board:
Total board feet:
Total linear feet:
Estimated total cost:
Board foot formula
Board feet = (thickness in inches × width in inches × length in feet) ÷ 12. One board foot equals a piece of wood 1 in thick × 12 in wide × 12 in long (144 cubic inches).