Rough-lumber quantity
Board Foot Calculator
Calculate board feet from thickness, width, length, quantity, and the price quoted by your lumber supplier.
Total rough lumber32 bd ft
Estimated stock cost: $240.
Transparent calculation
What the calculator returns
Total board feet and a straight-line stock-cost estimate.
The formulathickness (in) × width (in) × length (ft) ÷ 12 × quantity
Method and limits
A board foot is a volume equal to 144 cubic inches. The calculator uses the dimensions you enter, so decide whether your supplier prices rough nominal stock or measured stock before comparing the output with an invoice.
The result does not add milling, defect, color-match, or joinery allowance. Those belong in the quantity or a separate purchasing allowance that matches how selectively you need to cut the boards.