A board foot is a volume: thickness in inches × width in inches × length in inches ÷ 144. Enter the sizes you actually have (a surfaced “one-by” is often ¾ in thick) if you want the tally to match the wood in the rack rather than the nominal name.
Board feet from the sizes you type. A board foot is thickness (in) × width (in) × length (in) ÷ 144. Switch units to enter centimetres; the arithmetic is the same.
Enter thickness, width, length and a count.
This is an arithmetic helper, not a grading rule or a mill’s tally method. It does not subtract kerf or waste unless you change the figures.