Lumber Board Footage
Total board feet from thickness, width, length, count.
Example
You enter
- Thickness (in) 2
- Width (in) 4
- Length (ft) 8
- Count 10
You get
- Per piece 5.33 bf
- Total 53.33 bf
Checked against published worked examples from: Naval Education and Training Professional Development and Technology Center.
Details, formula, and sources
Formula or tableBoard feet = (thickness_in × width_in × length_ft) / 12. Rough-cut nominal vs. surfaced (S4S) actual dimensions resolved via NHLA / WWPA grading rules.
Source and editionNHLA / WWPA grading rules by name.
Free accessNHLA rule book licensed; WWPA standard grading rules free at wwpa.org.
What governsEstimate. AHJ and licensed professional govern.
API field namesthickness_in, width_in, length_ft, count, board_feet_each, total_board_feet
- Nominal-to-actual table 2x4 = 1.5 in × 3.5 in (S4S)WWPA standard grading rules