How Does This Calculator Work?
One board foot equals a piece of wood 1 inch thick, 12 inches wide, and 1 foot long (144 cubic inches). The formula multiplies thickness (in) × width (in) × length (ft), then divides by 12 to get board feet.
Lumber, especially hardwood, is often priced per board foot rather than per linear foot. This calculator converts a board's dimensions into board feet so you can compare pricing and estimate costs accurately.
Example Calculation
Hardwood Board Example
A board 1 in thick, 6 in wide, 8 ft long.
(1 × 6 × 8) ÷ 12 = 4 board feet.